| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Greg's Workout | Codeforces | Codeforces Round #156 (Div. 2) | 1 | |
| 2 | Free Cash | Codeforces | Codeforces Round #147 (Div. 2) | 1 | |
| 3 | Boy or Girl | Codeforces | Codeforces Round #146 (Div. 2) | 1 | |
| 4 | Perfect Permutation | Codeforces | Codeforces Round #144 (Div. 2) | 1 | |
| 5 | Team | Codeforces | Codeforces Round #143 (Div. 2) | 1 | |
| 6 | T-primes | Codeforces | Codeforces Round #142 (Div. 2) | 1 | |
| 7 | Is your horseshoe on the other hoof? | Codeforces | Codeforces Round #141 (Div. 2) | 1 | |
| 8 | k-String | Codeforces | Codeforces Round #135 (Div. 2) | 1 | |
| 9 | Dubstep | Codeforces | Codeforces Round #130 (Div. 2) | 1 | |
| 10 | Drinks | Codeforces | Codeforces Round #126 (Div. 2) | 1 | |
| 11 | Hexadecimal's theorem | Codeforces | Codeforces Round #125 (Div. 2) | 1 | |
| 12 | Supercentral Point | Codeforces | Codeforces Round #112 (Div. 2) | 1 | |
| 13 | Next Round | Codeforces | VK Cup 2012 Qualification Round 1 | 1 | |
| 14 | Marks | Codeforces | Codeforces Round #108 (Div. 2) | 1 | |
| 15 | Soft Drinking | Codeforces | Codeforces Round #107 (Div. 2) | 1 | |
| 16 | Business trip | Codeforces | Codeforces Round #106 (Div. 2) | 1 | |
| 17 | Insomnia cure | Codeforces | Codeforces Round #105 (Div. 2) | 1 | |
| 18 | Lucky Ticket | Codeforces | Codeforces Round #104 (Div. 2) | 1 | |
| 19 | Arrival of the General | Codeforces | Codeforces Round #103 (Div. 2) | 1 | |
| 20 | Amusing Joke | Codeforces | Codeforces Round #101 (Div. 2) | 1 | |
| 21 | Petr and Book | Codeforces | Codeforces Beta Round #99 (Div. 2) | 1 | |
| 22 | Presents | Codeforces | Codeforces Beta Round #97 (Div. 2) | 1 | |
| 23 | HQ9+ | Codeforces | Codeforces Beta Round #96 (Div. 2) | 1 | |
| 24 | cAPS lOCK | Codeforces | Codeforces Beta Round #95 (Div. 2) | 1 | |
| 25 | Cookies | Codeforces | Codeforces Beta Round #94 (Div. 2 Only) | 1 | |
| 26 | Epic Game | Codeforces | Codeforces Beta Round #90 | 1 | |
| 27 | Present from Lena | Codeforces | Codeforces Beta Round #89 (Div. 2) | 1 | |
| 28 | String Task | Codeforces | Codeforces Beta Round #89 (Div. 2) | 1 | |
| 29 | Tram | Codeforces | Codeforces Beta Round #87 (Div. 2 Only) | 1 | |
| 30 | Petya and Strings | Codeforces | Codeforces Beta Round #85 (Div. 2 Only) | 1 | |
| 31 | Nearly Lucky Number | Codeforces | Codeforces Beta Round #84 (Div. 2 Only) | 1 | |
| 32 | Football | Codeforces | Codeforces Beta Round #77 (Div. 2 Only) | 1 | |
| 33 | Chips | Codeforces | Codeforces Beta Round #75 (Div. 2 Only) | 1 | |
| 34 | Double Cola | Codeforces | Yandex.Algorithm 2011 Qualification 2 | 1 | |
| 35 | Life Without Zeros | Codeforces | Codeforces Beta Round #67 (Div. 2) | 1 | |
| 36 | Young Physicist | Codeforces | Codeforces Beta Round #63 (Div. 2) | 1 | |
| 37 | Ultra-Fast Mathematician | Codeforces | Codeforces Beta Round #57 (Div. 2) | 1 | |
| 38 | Word | Codeforces | Codeforces Beta Round #55 (Div. 2) | 1 | |
| 39 | Translation | Codeforces | Codeforces Beta Round #40 (Div. 2) | 1 | |
| 40 | Army | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 1 | |
| 41 | Reconnaissance 2 | Codeforces | Codeforces Beta Round #34 (Div. 2) | 1 | |
| 42 | Borze | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 1 | |
| 43 | Registration System | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 | |
| 44 | Winner | Codeforces | Codeforces Beta Round #2 | 1 | |
| 45 | Spreadsheet | Codeforces | Codeforces Beta Round #1 | 1 | |
| 46 | Bytelandian gold coins | SPOJ | 1 | ||
| 47 | Ws Cipher | SPOJ | 1 | ||
| 48 | Arm Wrestling Tournament | Live Archive | 2010 | Asia - Jakarta | 1 |
| 49 | Magic Numbers | Codeforces | Codeforces Round #189 (Div. 2) | 1 | |
| 50 | Hello, world! | TJU | 1 | ||
| 51 | Fibonacci Numbers | TJU | 1 | ||
| 52 | Meteoros | SPOJ Brazil | 1 | ||
| 53 | MODIFY SEQUENCE | SPOJ | 1 | ||
| 54 | Adding Reversed Numbers | TJU | 1 | ||
| 55 | Area of a Circle | URI | 1 | ||
| 56 | Clock Hands | UVA | 1 | ||
| 57 | Cheap Travel | Codeforces | Codeforces Round #266 (Div. 2) | 1 | |
| 58 | Balloons Colors | A2 Online Judge | 1 | ||
| 59 | Appleman and Easy Task | Codeforces | Codeforces Round #263 (Div. 2) | 1 | |
| 60 | FoxAndGame | TopCoder | SRM 571 - Div2 easy] (15491) | 1 | |
| 61 | Treats for the Cows | SPOJ | 1 | ||
| 62 | Wachovia Bank | SPOJ | 1 | ||
| 63 | Fibonacci Freeze | UVA | 1 | ||
| 64 | What's Next? | Live Archive | 2010 | Africa/Middle East - Arab Contest | 1 |
| 65 | Tanya and Toys | Codeforces | Codeforces Round #346 (Div. 2) | 1 | |
| 66 | Round House | Codeforces | Codeforces Round #346 (Div. 2) | 1 | |
| 67 | Far Relative’s Birthday Cake | Codeforces | Codeforces Round #343 (Div. 2) | 1 | |
| 68 | Wet Shark and Odd and Even | Codeforces | Codeforces Round #341 (Div. 2) | 1 | |
| 69 | Professor GukiZ's Robot | Codeforces | Educational Codeforces Round 6 | 1 | |
| 70 | Bulbs | Codeforces | Codeforces Round #338 (Div. 2) | 1 | |
| 71 | New Year and Days | Codeforces | Good Bye 2015 | 1 | |
| 72 | USB Flash Drives | Codeforces | Educational Codeforces Round 3 | 1 | |
| 73 | Uncowed Forces | Codeforces | Codeforces Round #334 (Div. 2) | 1 | |
| 74 | Two Bases | Codeforces | Codeforces Round #333 (Div. 2) | 1 | |
| 75 | Patrick and Shopping | Codeforces | Codeforces Round #332 (Div. 2) | 1 | |
| 76 | Vitaly and Night | Codeforces | Codeforces Round #330 (Div. 2) | 1 | |
| 77 | Alena's Schedule | Codeforces | Codeforces Round #325 (Div. 2) | 1 | |
| 78 | Robot's Task | Codeforces | Codeforces Round #323 (Div. 2) | 1 | |
| 79 | Asphalting Roads | Codeforces | Codeforces Round #323 (Div. 2) | 1 | |
| 80 | Luxurious Houses | Codeforces | Codeforces Round #322 (Div. 2) | 1 | |
| 81 | Vasya the Hipster | Codeforces | Codeforces Round #322 (Div. 2) | 1 | |
| 82 | Kefa and First Steps | Codeforces | Codeforces Round #321 (Div. 2) | 1 | |
| 83 | Multiplication Table | Codeforces | Codeforces Round #319 (Div. 2) | 1 | |
| 84 | Bear and Elections | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 1 | |
| 85 | Bear and Poker | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 1 | |
| 86 | Simple Game | Codeforces | Codeforces Round #316 (Div. 2) | 1 | |
| 87 | Elections | Codeforces | Codeforces Round #316 (Div. 2) | 1 | |
| 88 | Berland National Library | Codeforces | Codeforces Round #Pi (Div. 2) | 1 | |
| 89 | Lineland Mail | Codeforces | Codeforces Round #Pi (Div. 2) | 1 | |
| 90 | Currency System in Geraldion | Codeforces | Codeforces Round #313 (Div. 2) | 1 | |
| 91 | Lala Land and Apple Trees | Codeforces | Codeforces Round #312 (Div. 2) | 1 | |
| 92 | Ilya and Diplomas | Codeforces | Codeforces Round #311 (Div. 2) | 1 | |
| 93 | Vanya and Books | Codeforces | Codeforces Round #308 (Div. 2) | 1 | |
| 94 | Vanya and Table | Codeforces | Codeforces Round #308 (Div. 2) | 1 | |
| 95 | GukiZ and Contest | Codeforces | Codeforces Round #307 (Div. 2) | 1 | |
| 96 | Two Substrings | Codeforces | Codeforces Round #306 (Div. 2) | 1 | |
| 97 | Face Detection | Codeforces | Looksery Cup 2015 | 1 | |
| 98 | Mike and Fax | Codeforces | Codeforces Round #305 (Div. 2) | 1 | |
| 99 | Soldier and Badges | Codeforces | Codeforces Round #304 (Div. 2) | 1 | |
| 100 | Soldier and Bananas | Codeforces | Codeforces Round #304 (Div. 2) | 1 | |
| 101 | Queue | Codeforces | Codeforces Round #303 (Div. 2) | 1 | |
| 102 | Toy Cars | Codeforces | Codeforces Round #303 (Div. 2) | 1 | |
| 103 | Combination Lock | Codeforces | Codeforces Round #301 (Div. 2) | 1 | |
| 104 | Quasi Binary | Codeforces | Codeforces Round #300 | 1 | |
| 105 | Tavas and SaDDas | Codeforces | Codeforces Round #299 (Div. 2) | 1 | |
| 106 | Tavas and Nafas | Codeforces | Codeforces Round #299 (Div. 2) | 1 | |
| 107 | Exam | Codeforces | Codeforces Round #298 (Div. 2) | 1 | |
| 108 | Playing with Paper | Codeforces | Codeforces Round #296 (Div. 2) | 1 | |
| 109 | Two Buttons | Codeforces | Codeforces Round #295 (Div. 2) | 1 | |
| 110 | Pangram | Codeforces | Codeforces Round #295 (Div. 2) | 1 | |
| 111 | A and B and Team Training | Codeforces | Codeforces Round #294 (Div. 2) | 1 | |
| 112 | A and B and Compilation Errors | Codeforces | Codeforces Round #294 (Div. 2) | 1 | |
| 113 | A and B and Chess | Codeforces | Codeforces Round #294 (Div. 2) | 1 | |
| 114 | Chewba?ca and Number | Codeforces | Codeforces Round #291 (Div. 2) | 1 | |
| 115 | Fox And Snake | Codeforces | Codeforces Round #290 (Div. 2) | 1 | |
| 116 | Maximum in Table | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 1 | |
| 117 | Amr and Music | Codeforces | Codeforces Round #287 (Div. 2) | 1 | |
| 118 | Contest | Codeforces | Codeforces Round #285 (Div. 2) | 1 | |
| 119 | New Year Transportation | Codeforces | Good Bye 2014 | 1 | |
| 120 | Watching a movie | Codeforces | Codeforces Round #284 (Div. 2) | 1 | |
| 121 | Minimum Difficulty | Codeforces | Codeforces Round #283 (Div. 2) | 1 | |
| 122 | Vanya and Cubes | Codeforces | Codeforces Round #280 (Div. 2) | 1 | |
| 123 | Team Olympiad | Codeforces | Codeforces Round #279 (Div. 2) | 1 | |
| 124 | Given Length and Sum of Digits... | Codeforces | Codeforces Round #277.5 (Div. 2) | 1 | |
| 125 | OR in Matrix | Codeforces | Codeforces Round #277 (Div. 2) | 1 | |
| 126 | Calculating Function | Codeforces | Codeforces Round #277 (Div. 2) | 1 | |
| 127 | Counterexample | Codeforces | Codeforces Round #275 (Div. 2) | 1 | |
| 128 | Initial Bet | Codeforces | Codeforces Round #273 (Div. 2) | 1 | |
| 129 | Dreamoon and Stairs | Codeforces | Codeforces Round #272 (Div. 2) | 1 | |
| 130 | Worms | Codeforces | Codeforces Round #271 (Div. 2) | 1 | |
| 131 | Keyboard | Codeforces | Codeforces Round #271 (Div. 2) | 1 | |
| 132 | MUH and Sticks | Codeforces | Codeforces Round #269 (Div. 2) | 1 | |
| 133 | I Wanna Be the Guy | Codeforces | Codeforces Round #268 (Div. 2) | 1 | |
| 134 | Fedor and New Game | Codeforces | Codeforces Round #267 (Div. 2) | 1 | |
| 135 | George and Accommodation | Codeforces | Codeforces Round #267 (Div. 2) | 1 | |
| 136 | Inbox (100500) | Codeforces | Codeforces Round #265 (Div. 2) | 1 | |
| 137 | inc ARG | Codeforces | Codeforces Round #265 (Div. 2) | 1 | |
| 138 | Caisa and Sugar | Codeforces | Codeforces Round #264 (Div. 2) | 1 | |
| 139 | Vasya and Socks | Codeforces | Codeforces Round #262 (Div. 2) | 1 | |
| 140 | Pashmak and Flowers | Codeforces | Codeforces Round #261 (Div. 2) | 1 | |
| 141 | Pashmak and Garden | Codeforces | Codeforces Round #261 (Div. 2) | 1 | |
| 142 | Little Pony and Sort by Shift | Codeforces | Codeforces Round #259 (Div. 2) | 1 | |
| 143 | Little Pony and Crystal Mine | Codeforces | Codeforces Round #259 (Div. 2) | 1 | |
| 144 | Sort the Array | Codeforces | Codeforces Round #258 (Div. 2) | 1 | |
| 145 | Game With Sticks | Codeforces | Codeforces Round #258 (Div. 2) | 1 | |
| 146 | Jzzhu and Sequences | Codeforces | Codeforces Round #257 (Div. 2) | 1 | |
| 147 | Jzzhu and Children | Codeforces | Codeforces Round #257 (Div. 2) | 1 | |
| 148 | Suffix Structures | Codeforces | Codeforces Round #256 (Div. 2) | 1 | |
| 149 | Rewards | Codeforces | Codeforces Round #256 (Div. 2) | 1 | |
| 150 | DZY Loves Strings | Codeforces | Codeforces Round #255 (Div. 2) | 1 | |
| 151 | DZY Loves Chessboard | Codeforces | Codeforces Round #254 (Div. 2) | 1 | |
| 152 | Anton and Letters | Codeforces | Codeforces Round #253 (Div. 2) | 1 | |
| 153 | Valera and Antique Items | Codeforces | Codeforces Round #252 (Div. 2) | 1 | |
| 154 | Devu, the Dumb Guy | Codeforces | Codeforces Round #251 (Div. 2) | 1 | |
| 155 | Devu, the Singer and Churu, the Joker | Codeforces | Codeforces Round #251 (Div. 2) | 1 | |
| 156 | Queue on Bus Stop | Codeforces | Codeforces Round #249 (Div. 2) | 1 | |
| 157 | Kuriyama Mirai's Stones | Codeforces | Codeforces Round #248 (Div. 2) | 1 | |
| 158 | Choosing Teams | Codeforces | Codeforces Round #246 (Div. 2) | 1 | |
| 159 | k-Tree | Codeforces | Codeforces Round #247 (Div. 2) | 1 | |
| 160 | Black Square | Codeforces | Codeforces Round #247 (Div. 2) | 1 | |
| 161 | Prison Transfer | Codeforces | Codeforces Round #244 (Div. 2) | 1 | |
| 162 | Police Recruits | Codeforces | Codeforces Round #244 (Div. 2) | 1 | |
| 163 | Gravity Flip | Codeforces | Codeforces Round #238 (Div. 2) | 1 | |
| 164 | Valera and X | Codeforces | Codeforces Round #237 (Div. 2) | 1 | |
| 165 | Team | Codeforces | Codeforces Round #235 (Div. 2) | 1 | |
| 166 | Vanya and Cards | Codeforces | Codeforces Round #235 (Div. 2) | 1 | |
| 167 | Bear and Raspberry | Codeforces | Codeforces Round #226 (Div. 2) | 1 | |
| 168 | Coder | Codeforces | Codeforces Round #225 (Div. 2) | 1 | |
| 169 | Sereja and Dima | Codeforces | Codeforces Round #223 (Div. 2) | 1 | |
| 170 | New Year Candles | Codeforces | Good Bye 2013 | 1 | |
| 171 | Valera and Plates | Codeforces | Codeforces Round #216 (Div. 2) | 1 | |
| 172 | Domino | Codeforces | Codeforces Round #205 (Div. 2) | 1 | |
| 173 | Jeff and Digits | Codeforces | Codeforces Round #204 (Div. 2) | 1 | |
| 174 | TL | Codeforces | Codeforces Round #203 (Div. 2) | 1 | |
| 175 | Cinema Line | Codeforces | Codeforces Round #202 (Div. 2) | 1 | |
| 176 | Magnets | Codeforces | Codeforces Round #200 (Div. 2) | 1 | |
| 177 | Xenia and Ringroad | Codeforces | Codeforces Round #197 (Div. 2) | 1 | |
| 178 | Helpful Maths | Codeforces | Codeforces Round #197 (Div. 2) | 1 | |
| 179 | Candy Bags | Codeforces | Codeforces Round #194 (Div. 2) | 1 | |
| 180 | Cakeminator | Codeforces | Codeforces Round #192 (Div. 2) | 1 | |
| 181 | Flipping Game | Codeforces | Codeforces Round #191 (Div. 2) | 1 | |
| 182 | Ilya and Queries | Codeforces | Codeforces Round #186 (Div. 2) | 1 | |
| 183 | Ilya and Bank Account | Codeforces | Codeforces Round #186 (Div. 2) | 1 | |
| 184 | Array | Codeforces | Codeforces Round #181 (Div. 2) | 1 | |
| 185 | Shaass and Oskols | Codeforces | Codeforces Round #178 (Div. 2) | 1 | |
| 186 | Building Permutation | Codeforces | Codeforces Round #175 (Div. 2) | 1 | |
| 187 | Slightly Decreasing Permutations | Codeforces | Codeforces Round #175 (Div. 2) | 1 | |
| 188 | Bit++ | Codeforces | Codeforces Round #173 (Div. 2) | 1 | |
| 189 | Books | Codeforces | Codeforces Round #171 (Div. 2) | 1 | |
| 190 | Circle Line | Codeforces | Codeforces Round #170 (Div. 2) | 1 | |
| 191 | Little Girl and Maximum Sum | Codeforces | Codeforces Round #169 (Div. 2) | 1 | |
| 192 | Lunch Rush | Codeforces | Codeforces Round #169 (Div. 2) | 1 | |
| 193 | Lights Out | Codeforces | Codeforces Round #168 (Div. 2) | 1 | |
| 194 | Dima and Friends | Codeforces | Codeforces Round #167 (Div. 2) | 1 | |
| 195 | Fancy Fence | Codeforces | Codeforces Round #165 (Div. 2) | 1 | |
| 196 | Buttons | Codeforces | Codeforces Round #164 (Div. 2) | 1 | |
| 197 | Queue at the School | Codeforces | Codeforces Round #163 (Div. 2) | 1 | |
| 198 | Stones on the Table | Codeforces | Codeforces Round #163 (Div. 2) | 1 | |
| 199 | Roadside Trees (Simplified Edition) | Codeforces | Codeforces Round #162 (Div. 2) | 1 | |
| 200 | Colorful Stones (Simplified Edition) | Codeforces | Codeforces Round #162 (Div. 2) | 1 | |
| 201 | Beautiful Matrix | Codeforces | Codeforces Round #161 (Div. 2) | 1 | |
| 202 | Roma and Lucky Numbers | Codeforces | Codeforces Round #160 (Div. 2) | 1 | |
| 203 | Taxi | Codeforces | VK Cup 2012 Qualification Round 1 | 1 | |
| 204 | Lucky Sum of Digits | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 1 | |
| 205 | Drazil and Factorial | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 1 | |
| 206 | Summer Camp | Codeforces | Codeforces Round #352 (Div. 2) | 1 | |
| 207 | Different is Good | Codeforces | Codeforces Round #352 (Div. 2) | 1 | |
| 208 | Vanya and Fence | Codeforces | Codeforces Round #355 (Div. 2) | 1 | |
| 209 | Free Ice Cream | Codeforces | Codeforces Round #359 (Div. 2) | 1 | |
| 210 | Bear and Five Cards | Codeforces | Codeforces Round #356 (Div. 2) | 1 | |
| 211 | Nicholas and Permutation | Codeforces | Codeforces Round #354 (Div. 2) | 1 | |
| 212 | Bear and Finding Criminals | Codeforces | Codeforces Round #356 (Div. 2) | 1 | |
| 213 | Opponents | Codeforces | Codeforces Round #360 (Div. 2) | 1 | |
| 214 | Identifying tea | Live Archive | 2015 | Latin America | 1 |
| 215 | Watermelon | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 | |
| 216 | Anastasia and pebbles | Codeforces | Codeforces Round #407 (Div. 2) | 1 | |
| 217 | Karen and Morning | Codeforces | Codeforces Round #419 (Div. 2) | 1 | |
| 218 | Anton and Polyhedrons | Codeforces | Codeforces Round #404 (Div. 2) | 1 | |
| 219 | Bear and Big Brother | Codeforces | Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) | 1 | |
| 220 | Hulk | Codeforces | Codeforces Round #366 (Div. 2) | 1 | |
| 221 | Mishka and Game | Codeforces | Codeforces Round #365 (Div. 2) | 1 | |
| 222 | Scarborough Fair | Codeforces | Codeforces Round #449 (Div. 2) | 1 | |
| 223 | Bachgold Problem | Codeforces | Codeforces Round #388 (Div. 2) | 1 | |
| 224 | Bus to Udayland | Codeforces | Codeforces Round #369 (Div. 2) | 1 | |
| 225 | One-dimensional Japanese Crossword | Codeforces | Codeforces Round #374 (Div. 2) | 1 | |
| 226 | A Good Contest | Codeforces | Codeforces Round #357 (Div. 2) | 1 | |
| 227 | Taymyr is calling you | Codeforces | Codeforces Round #395 (Div. 2) | 1 | |
| 228 | Memory and Crow | Codeforces | Codeforces Round #370 (Div. 2) | 1 | |
| 229 | Crazy Computer | Codeforces | Codeforces Round #372 (Div. 2) | 1 | |
| 230 | Vladik and Courtesy | Codeforces | Codeforces Round #416 (Div. 2) | 1 | |
| 231 | Find Extra One | Codeforces | Codeforces Round #450 (Div. 2) | 1 | |
| 232 | Hongcow Learns the Cyclic Shift | Codeforces | Codeforces Round #385 (Div. 2) | 1 | |
| 233 | Generous Kefa | Codeforces | Codeforces Round #429 (Div. 2) | 1 | |
| 234 | Greed | Codeforces | Codeforces Round #446 (Div. 2) | 1 | |
| 235 | Brain's Photos | Codeforces | Codeforces Round #368 (Div. 2) | 1 | |
| 236 | Ostap and Grasshopper | Codeforces | Codeforces Round #382 (Div. 2) | 1 | |
| 237 | Arpa’s hard exam and Mehrdad’s naive cheat | Codeforces | Codeforces Round #383 (Div. 2) | 1 | |
| 238 | Timofey and cubes | Codeforces | Codeforces Round #395 (Div. 2) | 1 | |
| 239 | Arya and Bran | Codeforces | Codeforces Round #428 (Div. 2) | 1 | |
| 240 | An abandoned sentiment from past | Codeforces | Codeforces Round #418 (Div. 2) | 1 | |
| 241 | The Useless Toy | Codeforces | Codeforces Round #426 (Div. 2) | 1 | |
| 242 | Shell Game | Codeforces | Codeforces Round #401 (Div. 2) | 1 | |
| 243 | Borya's Diagnosis | Codeforces | Codeforces Round #443 (Div. 2) | 1 | |
| 244 | Beru-taxi | Codeforces | Codeforces Round #367 (Div. 2) | 1 | |
| 245 | Odds and Ends | Codeforces | Codeforces Round #431 (Div. 2) | 1 | |
| 246 | Snacktower | Codeforces | Codeforces Round #398 (Div. 2) | 1 | |
| 247 | Interesting drink | Codeforces | Codeforces Round #367 (Div. 2) | 1 | |
| 248 | Chloe and the sequence | Codeforces | Codeforces Round #384 (Div. 2) | 1 | |
| 249 | Memory and Trident | Codeforces | Codeforces Round #370 (Div. 2) | 1 | |
| 250 | Vladik and flights | Codeforces | Codeforces Round #384 (Div. 2) | 1 | |
| 251 | Filya and Homework | Codeforces | Codeforces Round #371 (Div. 2) | 1 | |
| 252 | The Artful Expedient | Codeforces | Codeforces Round #439 (Div. 2) | 1 | |
| 253 | 1, 10, 100, 1000... | Timus | 1 | ||
| 254 | Simple Equations | UVA | 1 | ||
| 255 | Normalized Form | Live Archive | 2010 | Africa/Middle East - Arab Contest | 1 |
| 256 | Cut Ribbon | Codeforces | Codeforces Round #119 (Div. 2) | 1 | |
| 257 | Shortest path of the king | Codeforces | Codeforces Beta Round #3 | 1 | |
| 258 | Omar | A2 Online Judge | 1 | ||
| 259 | Key races | Codeforces | Codeforces Round #427 (Div. 2) | 1 | |
| 260 | Cupboards | Codeforces | Codeforces Round #152 (Div. 2) | 2 | |
| 261 | Big Segment | Codeforces | Codeforces Round #149 (Div. 2) | 2 | |
| 262 | Two Bags of Potatoes | Codeforces | Codeforces Round #148 (Div. 2) | 2 | |
| 263 | Effective Approach | Codeforces | Codeforces Round #140 (Div. 2) | 2 | |
| 264 | Shooshuns and Sequence | Codeforces | Codeforces Round #137 (Div. 2) | 2 | |
| 265 | Little Elephant and Function | Codeforces | Codeforces Round #136 (Div. 2) | 2 | |
| 266 | Little Elephant and Problem | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 2 | |
| 267 | Airport | Codeforces | Codeforces Round #134 (Div. 2) | 2 | |
| 268 | Bicycle Chain | Codeforces | Codeforces Round #132 (Div. 2) | 2 | |
| 269 | Prizes, Prizes, more Prizes | Codeforces | Codeforces Round #130 (Div. 2) | 2 | |
| 270 | Little Elephant and Rozdil | Codeforces | Codeforces Round #129 (Div. 2) | 2 | |
| 271 | Comparing Strings | Codeforces | Codeforces Round #118 (Div. 2) | 2 | |
| 272 | Wizards and Demonstration | Codeforces | Codeforces Round #114 (Div. 2) | 2 | |
| 273 | Rank List | Codeforces | Codeforces Round #113 (Div. 2) | 2 | |
| 274 | Burning Midnight Oil | Codeforces | Codeforces Round #112 (Div. 2) | 2 | |
| 275 | Cd and pwd commands | Codeforces | VK Cup 2012 Qualification Round 1 | 2 | |
| 276 | Lucky Conversion | Codeforces | Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) | 2 | |
| 277 | Opposites Attract | Codeforces | Codeforces Beta Round #95 (Div. 2) | 2 | |
| 278 | Little Pigs and Wolves | Codeforces | Codeforces Beta Round #87 (Div. 2 Only) | 2 | |
| 279 | Palindromic Times | Codeforces | Codeforces Beta Round #83 (Div. 2 Only) | 2 | |
| 280 | Blackjack | Codeforces | Codeforces Beta Round #80 (Div. 2 Only) | 2 | |
| 281 | Sum of Digits | Codeforces | Codeforces Beta Round #79 (Div. 2 Only) | 2 | |
| 282 | Restoring Password | Codeforces | Codeforces Beta Round #76 (Div. 2 Only) | 2 | |
| 283 | Petya and Countryside | Codeforces | Codeforces Beta Round #61 (Div. 2) | 2 | |
| 284 | Sinking Ship | Codeforces | Codeforces Beta Round #59 (Div. 2) | 2 | |
| 285 | Next Test | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 2 | |
| 286 | Flag | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 2 | |
| 287 | Chat Servers Outgoing Traffic | Codeforces | Codeforces Beta Round #5 | 2 | |
| 288 | Ciel and Dancing | Codeforces | Codeforces Round #190 (Div. 2) | 2 | |
| 289 | Little Elephant and Magic Square | Codeforces | Codeforces Round #157 (Div. 2) | 2 | |
| 290 | Roman Numerals | UVA | 2 | ||
| 291 | Super Over | SPOJ | 2 | ||
| 292 | Minimum Number | SPOJ | 2 | ||
| 293 | Find the Format String | Live Archive | 2008 | Asia - Dhaka | 2 |
| 294 | George and Sleep | Codeforces | Codeforces Round #227 (Div. 2) | 2 | |
| 295 | SOLDIERS | SPOJ | 2 | ||
| 296 | PATHS | SPOJ | 2 | ||
| 297 | Vasya and Digital Root | Codeforces | Codeforces Round #206 (Div. 2) | 2 | |
| 298 | Handball | UVA | 2 | ||
| 299 | The Alphabet Sticker | A2 Online Judge | 2 | ||
| 300 | The Child and Homework | Codeforces | Codeforces Round #250 (Div. 2) | 2 | |
| 301 | Soroban | Codeforces | Codeforces Round #211 (Div. 2) | 2 | |
| 302 | Line to Cashier | Codeforces | Codeforces Round #239 (Div. 2) | 2 | |
| 303 | Lever | Codeforces | Codeforces Round #221 (Div. 2) | 2 | |
| 304 | Eugeny and Array | Codeforces | Codeforces Round #182 (Div. 2) | 2 | |
| 305 | Dima and Continuous Line | Codeforces | Codeforces Round #208 (Div. 2) | 2 | |
| 306 | Bridge Hand Evaluator | UVA | 2 | ||
| 307 | Bear and Three Balls | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 2 | |
| 308 | Little Artem and Grasshopper | Codeforces | VK Cup 2016 - Round 2 | 2 | |
| 309 | Bear and Displayed Friends | Codeforces | VK Cup 2016 - Round 1 | 2 | |
| 310 | Print Check | Codeforces | Codeforces Round #344 (Div. 2) | 2 | |
| 311 | Interview | Codeforces | Codeforces Round #344 (Div. 2) | 2 | |
| 312 | Robot Sequence | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 2 | |
| 313 | K-special Tables | Codeforces | Codeforces Round #342 (Div. 2) | 2 | |
| 314 | The Time | Codeforces | Educational Codeforces Round 7 | 2 | |
| 315 | Infinite Sequence | Codeforces | Educational Codeforces Round 7 | 2 | |
| 316 | Grandfather Dovlet’s calculator | Codeforces | Educational Codeforces Round 6 | 2 | |
| 317 | Slime Combining | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 2 | |
| 318 | Comparing Two Long Integers | Codeforces | Educational Codeforces Round 5 | 2 | |
| 319 | Gena's Code | Codeforces | Codeforces Round #339 (Div. 2) | 2 | |
| 320 | New Year and Domino | Codeforces | Good Bye 2015 | 2 | |
| 321 | New Year and Old Property | Codeforces | Good Bye 2015 | 2 | |
| 322 | Vika and Squares | Codeforces | Codeforces Round #337 (Div. 2) | 2 | |
| 323 | The Best Gift | Codeforces | Educational Codeforces Round 3 | 2 | |
| 324 | Saitama Destroys Hotel | Codeforces | Codeforces Round #336 (Div. 2) | 2 | |
| 325 | Magic Spheres | Codeforces | Codeforces Round #335 (Div. 2) | 2 | |
| 326 | Queries on a String | Codeforces | Educational Codeforces Round 1 | 2 | |
| 327 | Wilbur and Swimming Pool | Codeforces | Codeforces Round #331 (Div. 2) | 2 | |
| 328 | PawnChess | Codeforces | Codeforces Round #328 (Div. 2) | 2 | |
| 329 | Rebranding | Codeforces | Codeforces Round #327 (Div. 2) | 2 | |
| 330 | Lottery | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 2 | |
| 331 | Laurenty and Shop | Codeforces | Codeforces Round #325 (Div. 2) | 2 | |
| 332 | Developing Skills | Codeforces | Codeforces Round #322 (Div. 2) | 2 | |
| 333 | Replacement | Codeforces | Codeforces Round #316 (Div. 2) | 2 | |
| 334 | Gerald is into Art | Codeforces | Codeforces Round #313 (Div. 2) | 2 | |
| 335 | Amr and The Large Array | Codeforces | Codeforces Round #312 (Div. 2) | 2 | |
| 336 | Pasha and Tea | Codeforces | Codeforces Round #311 (Div. 2) | 2 | |
| 337 | Case of Fake Numbers | Codeforces | Codeforces Round #310 (Div. 2) | 2 | |
| 338 | Case of Matryoshkas | Codeforces | Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) | 2 | |
| 339 | Mike and Fun | Codeforces | Codeforces Round #305 (Div. 2) | 2 | |
| 340 | Sea and Islands | Codeforces | Codeforces Round #302 (Div. 2) | 2 | |
| 341 | Set of Strings | Codeforces | Codeforces Round #302 (Div. 2) | 2 | |
| 342 | Tourist's Notes | Codeforces | Codeforces Round #300 | 2 | |
| 343 | Cutting Banner | Codeforces | Codeforces Round #300 | 2 | |
| 344 | Photo to Remember | Codeforces | VK Cup 2015 - Qualification Round 1 | 2 | |
| 345 | Anya and Smartphone | Codeforces | Codeforces Round #293 (Div. 2) | 2 | |
| 346 | Tanya and Postcard | Codeforces | Codeforces Round #293 (Div. 2) | 2 | |
| 347 | Painting Pebbles | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 2 | |
| 348 | Mr. Kitayuta's Gift | Codeforces | Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) | 2 | |
| 349 | New Year Book Reading | Codeforces | Good Bye 2014 | 2 | |
| 350 | Removing Columns | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 2 | |
| 351 | Digital Counter | Codeforces | Codeforces Round #282 (Div. 2) | 2 | |
| 352 | Vasya and Wrestling | Codeforces | Codeforces Round #281 (Div. 2) | 2 | |
| 353 | Vasya and Football | Codeforces | Codeforces Round #281 (Div. 2) | 2 | |
| 354 | SwapSort | Codeforces | Codeforces Round #277.5 (Div. 2) | 2 | |
| 355 | Palindrome Transformation | Codeforces | Codeforces Round #277 (Div. 2) | 2 | |
| 356 | Factory | Codeforces | Codeforces Round #276 (Div. 2) | 2 | |
| 357 | Towers | Codeforces | Codeforces Round #274 (Div. 2) | 2 | |
| 358 | Strongly Connected City | Codeforces | Bayan 2015 Contest Warm Up | 2 | |
| 359 | Chat Online | Codeforces | Codeforces Round #268 (Div. 2) | 2 | |
| 360 | George and Job | Codeforces | Codeforces Round #267 (Div. 2) | 2 | |
| 361 | Little Dima and Equation | Codeforces | Codeforces Round #262 (Div. 2) | 2 | |
| 362 | Eevee | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 2 | |
| 363 | DZY Loves Hash | Codeforces | Codeforces Round #255 (Div. 2) | 2 | |
| 364 | DZY Loves Sequences | Codeforces | Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) | 2 | |
| 365 | Valera and Tubes | Codeforces | Codeforces Round #252 (Div. 2) | 2 | |
| 366 | Kitahara Haruki's Gift | Codeforces | Codeforces Round #248 (Div. 2) | 2 | |
| 367 | Football Kit | Codeforces | Codeforces Round #246 (Div. 2) | 2 | |
| 368 | Shower Line | Codeforces | Codeforces Round #247 (Div. 2) | 2 | |
| 369 | Sereja and Mugs | Codeforces | Codeforces Round #243 (Div. 2) | 2 | |
| 370 | Squats | Codeforces | Codeforces Round #242 (Div. 2) | 2 | |
| 371 | Mashmokh and Lights | Codeforces | Codeforces Round #240 (Div. 2) | 2 | |
| 372 | Inna and Choose Options | Codeforces | Codeforces Round #234 (Div. 2) | 2 | |
| 373 | Fox and Cross | Codeforces | Codeforces Round #228 (Div. 2) | 2 | |
| 374 | Bear and Strings | Codeforces | Codeforces Round #226 (Div. 2) | 2 | |
| 375 | Ksenia and Pan Scales | Codeforces | Codeforces Round #224 (Div. 2) | 2 | |
| 376 | New Year Present | Codeforces | Good Bye 2013 | 2 | |
| 377 | Collecting Beats is Fun | Codeforces | Codeforces Round #219 (Div. 2) | 2 | |
| 378 | Sereja and Coat Rack | Codeforces | Codeforces Round #215 (Div. 2) | 2 | |
| 379 | The Fibonacci Segment | Codeforces | Codeforces Round #213 (Div. 2) | 2 | |
| 380 | Good Number | Codeforces | Codeforces Round #213 (Div. 2) | 2 | |
| 381 | Fixing Typos | Codeforces | Codeforces Round #211 (Div. 2) | 2 | |
| 382 | Petya and Staircases | Codeforces | Codeforces Round #212 (Div. 2) | 2 | |
| 383 | Levko and Table | Codeforces | Codeforces Round #210 (Div. 2) | 2 | |
| 384 | Table | Codeforces | Codeforces Round #209 (Div. 2) | 2 | |
| 385 | Group of Students | Codeforces | Codeforces Round #207 (Div. 2) | 2 | |
| 386 | Jeff and Periods | Codeforces | Codeforces Round #204 (Div. 2) | 2 | |
| 387 | Fixed Points | Codeforces | Codeforces Round #201 (Div. 2) | 2 | |
| 388 | Difference Row | Codeforces | Codeforces Round #201 (Div. 2) | 2 | |
| 389 | Alternating Current | Codeforces | Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) | 2 | |
| 390 | Xenia and Divisors | Codeforces | Codeforces Round #199 (Div. 2) | 2 | |
| 391 | Vasily the Bear and Triangle | Codeforces | Codeforces Round #195 (Div. 2) | 2 | |
| 392 | Strings of Power | Codeforces | Codeforces Round #188 (Div. 2) | 2 | |
| 393 | Sail | Codeforces | Codeforces Round #180 (Div. 2) | 2 | |
| 394 | Greg and Array | Codeforces | Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) | 2 | |
| 395 | Polo the Penguin and Matrix | Codeforces | Codeforces Round #177 (Div. 2) | 2 | |
| 396 | IQ Test | Codeforces | Codeforces Round #176 (Div. 2) | 2 | |
| 397 | Find Marble | Codeforces | Codeforces Round #175 (Div. 2) | 2 | |
| 398 | Beautiful Sets of Points | Codeforces | Codeforces Round #164 (Div. 2) | 2 | |
| 399 | Escape from Stones | Codeforces | Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) | 2 | |
| 400 | Squares | Codeforces | Codeforces Round #161 (Div. 2) | 2 | |
| 401 | Adding Digits | Codeforces | Codeforces Round #158 (Div. 2) | 2 | |
| 402 | Lucky Substring | Codeforces | Codeforces Beta Round #91 (Div. 2 Only) | 2 | |
| 403 | Hexadecimal's Numbers | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 2 | |
| 404 | Little Robber Girl's Zoo | Codeforces | Codeforces Round #359 (Div. 2) | 2 | |
| 405 | Vanya and Food Processor | Codeforces | Codeforces Round #355 (Div. 2) | 2 | |
| 406 | Meta-Loopless Sorts | UVA | 2 | ||
| 407 | Thor | Codeforces | Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) | 2 | |
| 408 | Arpa and a research in Mexican wave | Codeforces | Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) | 2 | |
| 409 | Okabe and Future Gadget Laboratory | Codeforces | Codeforces Round #420 (Div. 2) | 2 | |
| 410 | Mister B and Book Reading | Codeforces | Codeforces Round #421 (Div. 2) | 2 | |
| 411 | Straight <<A>> | Codeforces | Codeforces Round #415 (Div. 2) | 2 | |
| 412 | The Festive Evening | Codeforces | Codeforces Round #426 (Div. 2) | 2 | |
| 413 | Ilya and tic-tac-toe game | Codeforces | Codeforces Round #390 (Div. 2) | 2 | |
| 414 | Alyona and copybooks | Codeforces | Codeforces Round #381 (Div. 2) | 2 | |
| 415 | Sagheer and Crossroads | Codeforces | Codeforces Round #417 (Div. 2) | 2 | |
| 416 | Wrath | Codeforces | Codeforces Round #446 (Div. 2) | 2 | |
| 417 | Vladik and Complicated Book | Codeforces | Codeforces Round #416 (Div. 2) | 2 | |
| 418 | Not Afraid | Codeforces | Codeforces Round #406 (Div. 2) | 2 | |
| 419 | Mishka and trip | Codeforces | Codeforces Round #365 (Div. 2) | 2 | |
| 420 | Table Tennis | Codeforces | Codeforces Round #443 (Div. 2) | 2 | |
| 421 | The Child and Toy | Codeforces | Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) | 2 | |
| 422 | Code Parsing | Codeforces | Codeforces Round #156 (Div. 2) | 3 | |
| 423 | Internet Address | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 3 | |
| 424 | System Administrator | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 3 | |
| 425 | Dividing Orange | Codeforces | Codeforces Round #150 (Div. 2) | 3 | |
| 426 | Heads or Tails | Codeforces | Codeforces Round #149 (Div. 2) | 3 | |
| 427 | Dice Tower | Codeforces | Codeforces Round #139 (Div. 2) | 3 | |
| 428 | Array | Codeforces | Codeforces Round #138 (Div. 2) | 3 | |
| 429 | Cosmic Tables | Codeforces | Codeforces Round #137 (Div. 2) | 3 | |
| 430 | Little Elephant and Numbers | Codeforces | Codeforces Round #136 (Div. 2) | 3 | |
| 431 | Tiling with Hexagons | Codeforces | Codeforces Round #133 (Div. 2) | 3 | |
| 432 | Two Problems | Codeforces | Codeforces Round #128 (Div. 2) | 3 | |
| 433 | Exams | Codeforces | Codeforces Round #122 (Div. 2) | 3 | |
| 434 | Funky Numbers | Codeforces | Codeforces Round #121 (Div. 2) | 3 | |
| 435 | Vasya's Calendar | Codeforces | Codeforces Round #117 (Div. 2) | 3 | |
| 436 | Phone Code | Codeforces | Croc Champ 2012 - Qualification Round | 3 | |
| 437 | Phone Numbers | Codeforces | Codeforces Round #107 (Div. 2) | 3 | |
| 438 | Postcards and photos | Codeforces | Codeforces Beta Round #98 (Div. 2) | 3 | |
| 439 | Replacement | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 3 | |
| 440 | Unary | Codeforces | Codeforces Beta Round #96 (Div. 2) | 3 | |
| 441 | Canvas Frames | Codeforces | Codeforces Beta Round #93 (Div. 2 Only) | 3 | |
| 442 | Lucky Sum | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) | 3 | |
| 443 | Card Game | Codeforces | Codeforces Beta Round #82 (Div. 2) | 3 | |
| 444 | Testing Pants for Sadness | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 3 | |
| 445 | Powerful array | Codeforces | Yandex.Algorithm 2011 Round 2 | 3 | |
| 446 | Plug-in | Codeforces | Yandex.Algorithm Open 2011 Qualification 1 | 3 | |
| 447 | Easter Eggs | Codeforces | Codeforces Beta Round #70 (Div. 2) | 3 | |
| 448 | Haiku | Codeforces | Codeforces Beta Round #70 (Div. 2) | 3 | |
| 449 | Room Leader | Codeforces | Codeforces Beta Round #68 | 3 | |
| 450 | Petya and Java | Codeforces | Codeforces Beta Round #61 (Div. 2) | 3 | |
| 451 | Bar | Codeforces | Codeforces Beta Round #52 (Div. 2) | 3 | |
| 452 | Sleuth | Codeforces | Codeforces Beta Round #46 (Div. 2) | 3 | |
| 453 | Ball Game | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 3 | |
| 454 | Letter | Codeforces | Codeforces Beta Round #42 (Div. 2) | 3 | |
| 455 | Worms Evolution | Codeforces | Codeforces Beta Round #31 (Div. 2, Codeforces format) | 3 | |
| 456 | Phone numbers | Codeforces | Codeforces Beta Round #25 (Div. 2 Only) | 3 | |
| 457 | Stripe | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 3 | |
| 458 | Burglar and Matches | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 3 | |
| 459 | Letter | Codeforces | Codeforces Beta Round #14 (Div. 2) | 3 | |
| 460 | Numbers | Codeforces | Codeforces Beta Round #13 | 3 | |
| 461 | Correct Solution? | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 3 | |
| 462 | Super Agent | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 3 | |
| 463 | Increasing Sequence | Codeforces | Codeforces Beta Round #11 | 3 | |
| 464 | President's Office | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 3 | |
| 465 | Tic-tac-toe | Codeforces | Codeforces Beta Round #3 | 3 | |
| 466 | Can you play carrom !!! | SPOJ | 3 | ||
| 467 | Blackjack | Live Archive | 2004 | North America - Rocky Mountain | 3 |
| 468 | Sockets | Codeforces | Codeforces Round #159 (Div. 2) | 3 | |
| 469 | Snow Footprints | Codeforces | Codeforces Round #180 (Div. 2) | 3 | |
| 470 | Point on Spiral | Codeforces | Codeforces Round #171 (Div. 2) | 3 | |
| 471 | Cows and Primitive Roots | Codeforces | Codeforces Round #174 (Div. 2) | 3 | |
| 472 | To Add or Not to Add | Codeforces | Codeforces Round #143 (Div. 2) | 3 | |
| 473 | ZigZag | TopCoder | TCCC '03 Semifinals 3 - Div1 easy] (4493) | 3 | |
| 474 | Seating On Bus | Codeforces | Educational Codeforces Round 11 | 3 | |
| 475 | Co-prime Array | Codeforces | Educational Codeforces Round 11 | 3 | |
| 476 | Bicycle Race | Codeforces | Codeforces Round #346 (Div. 2) | 3 | |
| 477 | Bear and Reverse Radewoosh | Codeforces | VK Cup 2016 - Round 1 (Div. 2 Edition) | 3 | |
| 478 | Little Artem and Matrix | Codeforces | VK Cup 2016 - Round 2 | 3 | |
| 479 | Voting for Photos | Codeforces | VK Cup 2016 - Qualification Round 1 | 3 | |
| 480 | Tennis Tournament | Codeforces | Educational Codeforces Round 8 | 3 | |
| 481 | Guest From the Past | Codeforces | Codeforces Round #342 (Div. 2) | 3 | |
| 482 | Not Equal on a Segment | Codeforces | Educational Codeforces Round 7 | 3 | |
| 483 | Constellation | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 3 | |
| 484 | Watering Flowers | Codeforces | Codeforces Round #340 (Div. 2) | 3 | |
| 485 | HDD is Outdated Technology | Codeforces | Educational Codeforces Round 4 | 3 | |
| 486 | The Text Splitting | Codeforces | Educational Codeforces Round 4 | 3 | |
| 487 | Load Balancing | Codeforces | Educational Codeforces Round 3 | 3 | |
| 488 | Spongebob and Joke | Codeforces | Codeforces Round #332 (Div. 2) | 3 | |
| 489 | Cleaner Robot | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 3 | |
| 490 | Gennady the Dentist | Codeforces | Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) | 3 | |
| 491 | Finding Team Member | Codeforces | Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 | |
| 492 | Order Book | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 3 | |
| 493 | Music | Codeforces | Codeforces Round #315 (Div. 2) | 3 | |
| 494 | Primes or Palindromes? | Codeforces | Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) | 3 | |
| 495 | School Marks | Codeforces | Codeforces Round #301 (Div. 2) | 3 | |
| 496 | Glass Carving | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 3 | |
| 497 | Om Nom and Dark Park | Codeforces | ZeptoLab Code Rush 2015 | 3 | |
| 498 | King of Thieves | Codeforces | ZeptoLab Code Rush 2015 | 3 | |
| 499 | Guess Your Way Out! | Codeforces | Codeforces Round #287 (Div. 2) | 3 | |
| 500 | Secret Combination | Codeforces | Codeforces Round #283 (Div. 2) | 3 | |
| 501 | Vasya and Basketball | Codeforces | Codeforces Round #281 (Div. 2) | 3 | |
| 502 | Queue | Codeforces | Codeforces Round #279 (Div. 2) | 3 | |
| 503 | Long Jumps | Codeforces | Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) | 3 | |
| 504 | Bayan Bus | Codeforces | Bayan 2015 Contest Warm Up | 3 | |
| 505 | Gargari and Bishops | Codeforces | Codeforces Round #264 (Div. 2) | 3 | |
| 506 | Valera and Fruits | Codeforces | Codeforces Round #252 (Div. 2) | 3 | |
| 507 | The Child and Set | Codeforces | Codeforces Round #250 (Div. 2) | 3 | |
| 508 | Megacity | Codeforces | Codeforces Round #242 (Div. 2) | 3 | |
| 509 | Start Up | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) | 3 | |
| 510 | Football | Codeforces | RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) | 3 | |
| 511 | Booking System | Codeforces | Codeforces Round #241 (Div. 2) | 3 | |
| 512 | Art Union | Codeforces | Codeforces Round #241 (Div. 2) | 3 | |
| 513 | Guess a number! | Codeforces | Codeforces Round #241 (Div. 2) | 3 | |
| 514 | Password Check | Codeforces | Coder-Strike 2014 - Qualification Round | 3 | |
| 515 | A + B Strikes Back | Codeforces | April Fools Day Contest 2014 | 3 | |
| 516 | Garland | Codeforces | Codeforces Round #239 (Div. 2) | 3 | |
| 517 | Long Path | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 3 | |
| 518 | Triangle | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 3 | |
| 519 | Unusual Product | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 3 | |
| 520 | Sereja and Contests | Codeforces | Codeforces Round #235 (Div. 2) | 3 | |
| 521 | Inna and New Matrix of Candies | Codeforces | Codeforces Round #234 (Div. 2) | 3 | |
| 522 | Bear and Prime Numbers | Codeforces | Codeforces Round #226 (Div. 2) | 3 | |
| 523 | Arithmetic Progression | Codeforces | Codeforces Round #224 (Div. 2) | 3 | |
| 524 | Sereja and Stairs | Codeforces | Codeforces Round #223 (Div. 2) | 3 | |
| 525 | K-Periodic Array | Codeforces | Codeforces Round #218 (Div. 2) | 3 | |
| 526 | Valera and Contest | Codeforces | Codeforces Round #216 (Div. 2) | 3 | |
| 527 | Sereja and Algorithm | Codeforces | Codeforces Round #215 (Div. 1) | 3 | |
| 528 | Dima and To-do List | Codeforces | Codeforces Round #214 (Div. 2) | 3 | |
| 529 | Dima and Guards | Codeforces | Codeforces Round #214 (Div. 2) | 3 | |
| 530 | Flag Day | Codeforces | Codeforces Round #207 (Div. 2) | 3 | |
| 531 | Vasya and Public Transport | Codeforces | Codeforces Round #206 (Div. 2) | 3 | |
| 532 | Bombs | Codeforces | Codeforces Round #203 (Div. 2) | 3 | |
| 533 | Maximum Absurdity | Codeforces | Codeforces Round #193 (Div. 2) | 3 | |
| 534 | Down the Hatch! | Codeforces | Codeforces Round #193 (Div. 2) | 3 | |
| 535 | Sereja and Array | Codeforces | Codeforces Round #187 (Div. 2) | 3 | |
| 536 | Ilya and Matrix | Codeforces | Codeforces Round #186 (Div. 2) | 3 | |
| 537 | Whose sentence is it? | Codeforces | Codeforces Round #185 (Div. 2) | 3 | |
| 538 | Lucky Permutation Triple | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 3 | |
| 539 | Eugeny and Play List | Codeforces | Codeforces Round #182 (Div. 2) | 3 | |
| 540 | Network Topology | Codeforces | Croc Champ 2013 - Round 1 | 3 | |
| 541 | Spyke Talks | Codeforces | Croc Champ 2013 - Qualification Round | 3 | |
| 542 | Polo the Penguin and Segments | Codeforces | Codeforces Round #177 (Div. 2) | 3 | |
| 543 | Cows and Poker Game | Codeforces | Codeforces Round #174 (Div. 2) | 3 | |
| 544 | Cows and Sequence | Codeforces | Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) | 3 | |
| 545 | XOR and OR | Codeforces | Codeforces Round #173 (Div. 2) | 3 | |
| 546 | Ladder | Codeforces | Codeforces Round #171 (Div. 2) | 3 | |
| 547 | Little Girl and Maximum XOR | Codeforces | Codeforces Round #169 (Div. 2) | 3 | |
| 548 | Dima and Staircase | Codeforces | Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) | 3 | |
| 549 | Multithreading | Codeforces | Codeforces Round #165 (Div. 2) | 3 | |
| 550 | Playing Cubes | Codeforces | Codeforces Round #159 (Div. 2) | 3 | |
| 551 | Little Xor | Codeforces | Codeforces Round #153 (Div. 2) | 3 | |
| 552 | Easy Number Challenge | Codeforces | Codeforces Round #146 (Div. 2) | 3 | |
| 553 | LLPS | Codeforces | Codeforces Round #127 (Div. 2) | 3 | |
| 554 | Common Divisors | Codeforces | Codeforces Round #117 (Div. 2) | 3 | |
| 555 | Ternary Logic | Codeforces | Codeforces Beta Round #97 (Div. 2) | 3 | |
| 556 | Pyramid of Glasses | Codeforces | Codeforces Round #354 (Div. 2) | 3 | |
| 557 | Vanya and Label | Codeforces | Codeforces Round #355 (Div. 2) | 3 | |
| 558 | Petya and Exam | Codeforces | Codeforces Round #425 (Div. 2) | 3 | |
| 559 | Karen and Game | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 3 | |
| 560 | Mike and Cellphone | Codeforces | Codeforces Round #361 (Div. 2) | 3 | |
| 561 | Hongcow Solves A Puzzle | Codeforces | Codeforces Round #385 (Div. 2) | 3 | |
| 562 | Alyona and Spreadsheet | Codeforces | Codeforces Round #401 (Div. 2) | 3 | |
| 563 | Voting | Codeforces | Codeforces Round #388 (Div. 2) | 3 | |
| 564 | Cloud of Hashtags | Codeforces | Codeforces Round #401 (Div. 2) | 3 | |
| 565 | Masha and geometric depression | Codeforces | Codeforces Round #407 (Div. 2) | 3 | |
| 566 | Chilly Willy | Codeforces | Codeforces Round #152 (Div. 2) | 4 | |
| 567 | Mishap in Club | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 4 | |
| 568 | Weather | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) | 4 | |
| 569 | Lefthanders and Righthanders | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) | 4 | |
| 570 | Two Tables | Codeforces | Codeforces Round #141 (Div. 2) | 4 | |
| 571 | Special Offer! Super Price 999 Bourles! | Codeforces | Codeforces Round #135 (Div. 2) | 4 | |
| 572 | Mountain Scenery | Codeforces | Codeforces Round #134 (Div. 2) | 4 | |
| 573 | About Bacteria | Codeforces | Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) | 4 | |
| 574 | After Training | Codeforces | Codeforces Round #123 (Div. 2) | 4 | |
| 575 | Good Matrix Elements | Codeforces | ABBYY Cup 2.0 - Easy | 4 | |
| 576 | Good Matrix Elements | Codeforces | ABBYY Cup 2.0 - Easy | 4 | |
| 577 | Find Pair | Codeforces | Codeforces Round #111 (Div. 2) | 4 | |
| 578 | Friends or Not | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |
| 579 | Steps | Codeforces | Codeforces Round #108 (Div. 2) | 4 | |
| 580 | Escape | Codeforces | Codeforces Round #105 (Div. 2) | 4 | |
| 581 | Lucky Mask | Codeforces | Codeforces Round #104 (Div. 2) | 4 | |
| 582 | Meeting | Codeforces | Codeforces Round #103 (Div. 2) | 4 | |
| 583 | Help Kingdom of Far Far Away 2 | Codeforces | Codeforces Round #102 (Div. 2) | 4 | |
| 584 | Turing Tape | Codeforces | Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) | 4 | |
| 585 | Winnie-the-Pooh and honey | Codeforces | School Regional Team Contest, Saratov, 2011 | 4 | |
| 586 | Quiz League | Codeforces | School Regional Team Contest, Saratov, 2011 | 4 | |
| 587 | Elevator | Codeforces | School Regional Team Contest, Saratov, 2011 | 4 | |
| 588 | Petya and Square | Codeforces | Codeforces Beta Round #85 (Div. 2 Only) | 4 | |
| 589 | Choosing Laptop | Codeforces | Codeforces Beta Round #82 (Div. 2) | 4 | |
| 590 | African Crossword | Codeforces | Codeforces Beta Round #74 (Div. 2 Only) | 4 | |
| 591 | Chord | Codeforces | Codeforces Beta Round #73 (Div. 2 Only) | 4 | |
| 592 | Progress Bar | Codeforces | Codeforces Beta Round #65 (Div. 2) | 4 | |
| 593 | Irrational problem | Codeforces | Codeforces Beta Round #62 | 4 | |
| 594 | Settlers' Training | Codeforces | Codeforces Beta Round #59 (Div. 2) | 4 | |
| 595 | Where Are My Flakes? | Codeforces | Codeforces Beta Round #56 | 4 | |
| 596 | Fortune Telling | Codeforces | Codeforces Beta Round #55 (Div. 2) | 4 | |
| 597 | Autocomplete | Codeforces | Codeforces Beta Round #49 (Div. 2) | 4 | |
| 598 | 123-sequence | Codeforces | Codeforces Testing Round #1 | 4 | |
| 599 | Coins | Codeforces | Codeforces Beta Round #44 (Div. 2) | 4 | |
| 600 | Indian Summer | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 4 | |
| 601 | Shell Game | Codeforces | Codeforces Beta Round #35 (Div. 2) | 4 | |
| 602 | Page Numbers | Codeforces | Codeforces Beta Round #34 (Div. 2) | 4 | |
| 603 | BerOS file system | Codeforces | Codeforces Alpha Round #20 (Codeforces format) | 4 | |
| 604 | Young Photographer | Codeforces | Codeforces Beta Round #14 (Div. 2) | 4 | |
| 605 | Power Consumption Calculation | Codeforces | Codeforces Beta Round #10 | 4 | |
| 606 | Running Student | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 4 | |
| 607 | Center Alignment | Codeforces | Codeforces Beta Round #5 | 4 | |
| 608 | Troops of Sand Monsters | SPOJ | 4 | ||
| 609 | Magic, Wizardry and Wonders | Codeforces | Codeforces Round #143 (Div. 2) | 4 | |
| 610 | Magic Box | Codeforces | Codeforces Round #143 (Div. 2) | 4 | |
| 611 | Gabriel and Caterpillar | Codeforces | Educational Codeforces Round 10 | 4 | |
| 612 | Amity Assessment | Codeforces | CROC 2016 - Elimination Round | 4 | |
| 613 | Little Artem and Dance | Codeforces | VK Cup 2016 - Round 2 | 4 | |
| 614 | Promocodes with Mistakes | Codeforces | VK Cup 2016 - Qualification Round 1 | 4 | |
| 615 | Orchestra | Codeforces | 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) | 4 | |
| 616 | Island Puzzle | Codeforces | 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) | 4 | |
| 617 | Cracking the Code | Codeforces | Experimental Educational Round: VolBIT Formulas Blitz | 4 | |
| 618 | Testing Robots | Codeforces | Codeforces Round #335 (Div. 2) | 4 | |
| 619 | Extract Numbers | Codeforces | Educational Codeforces Round 2 | 4 | |
| 620 | Email Aliases | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 4 | |
| 621 | Three Logos | Codeforces | Codeforces Round #322 (Div. 2) | 4 | |
| 622 | ZgukistringZ | Codeforces | Codeforces Round #307 (Div. 2) | 4 | |
| 623 | Regular Bridge | Codeforces | Codeforces Round #306 (Div. 2) | 4 | |
| 624 | Weird Chess | Codeforces | Codeforces Round #300 | 4 | |
| 625 | Clique Problem | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 4 | |
| 626 | Rotate, Flip and Zoom | Codeforces | VK Cup 2015 - Qualification Round 2 | 4 | |
| 627 | Vanya and Computer Game | Codeforces | Codeforces Round #280 (Div. 2) | 4 | |
| 628 | A Lot of Games | Codeforces | Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) | 4 | |
| 629 | Predict Outcome of the Game | Codeforces | Codeforces Round #258 (Div. 2) | 4 | |
| 630 | Forgotten Episode | Codeforces | Testing Round #10 | 4 | |
| 631 | Devu and Partitioning of the Array | Codeforces | Codeforces Round #251 (Div. 2) | 4 | |
| 632 | Om Nom and Spiders | Codeforces | Zepto Code Rush 2014 | 4 | |
| 633 | Cardiogram | Codeforces | Codeforces Round #249 (Div. 2) | 4 | |
| 634 | Sereja and Mirroring | Codeforces | Codeforces Round #243 (Div. 2) | 4 | |
| 635 | Pasha and Hamsters | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 2) | 4 | |
| 636 | Pattern | Codeforces | Coder-Strike 2014 - Round 1 | 4 | |
| 637 | Poster | Codeforces | Coder-Strike 2014 - Round 1 | 4 | |
| 638 | Toy Sum | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 4 | |
| 639 | Marathon | Codeforces | Codeforces Round #237 (Div. 2) | 4 | |
| 640 | Inna and Huge Candy Matrix | Codeforces | Codeforces Round #234 (Div. 2) | 4 | |
| 641 | Multitasking | Codeforces | Codeforces Round #225 (Div. 2) | 4 | |
| 642 | Semifinals | Codeforces | Codeforces Round #222 (Div. 2) | 4 | |
| 643 | I.O.U. | Codeforces | Codeforces Round #221 (Div. 2) | 4 | |
| 644 | Maximum Submatrix 2 | Codeforces | Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) | 4 | |
| 645 | Vessels | Codeforces | Codeforces Round #218 (Div. 2) | 4 | |
| 646 | Matrix | Codeforces | Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) | 4 | |
| 647 | Find Maximum | Codeforces | Codeforces Round #205 (Div. 2) | 4 | |
| 648 | Jeff and Rounding | Codeforces | Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) | 4 | |
| 649 | Xenia and Spies | Codeforces | Codeforces Round #199 (Div. 2) | 4 | |
| 650 | Tourist Problem | Codeforces | Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) | 4 | |
| 651 | Ciel and Robot | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 4 | |
| 652 | Psychos in a Line | Codeforces | Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) | 4 | |
| 653 | The Closest Pair | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 4 | |
| 654 | Command Line Arguments | Codeforces | Croc Champ 2013 - Qualification Round | 4 | |
| 655 | Mysterious strings | Codeforces | April Fools Day Contest 2013 | 4 | |
| 656 | Dima and Sequence | Codeforces | Codeforces Round #167 (Div. 2) | 4 | |
| 657 | Secret | Codeforces | Codeforces Round #166 (Div. 2) | 4 | |
| 658 | Ancient Prophesy | Codeforces | Codeforces Round #158 (Div. 2) | 4 | |
| 659 | Forming Teams | Codeforces | Codeforces Round #133 (Div. 2) | 4 | |
| 660 | Walking in the Rain | Codeforces | Codeforces Round #121 (Div. 2) | 4 | |
| 661 | Anagram Search | Codeforces | Codeforces Round #103 (Div. 2) | 4 | |
| 662 | Fruits | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 4 | |
| 663 | Reberland Linguistics | Codeforces | Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) | 4 | |
| 664 | Tennis Game | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 4 | |
| 665 | Riding in a Lift | Codeforces | Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) | 4 | |
| 666 | Drazil and Tiles | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 4 | |
| 667 | Vladik and Memorable Trip | Codeforces | Codeforces Round #416 (Div. 2) | 4 | |
| 668 | Game of the Rows | Codeforces | Codeforces Round #428 (Div. 2) | 4 | |
| 669 | Array Division | Codeforces | Educational Codeforces Round 21 | 4 | |
| 670 | Road Map | Codeforces | Codeforces Beta Round #34 (Div. 2) | 4 | |
| 671 | Jury Size | Codeforces | Codeforces Round #155 (Div. 2) | 5 | |
| 672 | Young Table | Codeforces | Codeforces Round #147 (Div. 2) | 5 | |
| 673 | Game on Paper | Codeforces | Codeforces Round #128 (Div. 2) | 5 | |
| 674 | Cutting Figure | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 5 | |
| 675 | Series of Crimes | Codeforces | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) | 5 | |
| 676 | Robot Bicorn Attack | Codeforces | Codeforces Round #115 | 5 | |
| 677 | Pseudorandom Sequence Period | Codeforces | Croc Champ 2012 - Qualification Round | 5 | |
| 678 | Wizards and Trolleybuses | Codeforces | Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) | 5 | |
| 679 | Suspects | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 5 | |
| 680 | Martian Clock | Codeforces | Codeforces Round #106 (Div. 2) | 5 | |
| 681 | Punctuation | Codeforces | Codeforces Testing Round #4 | 5 | |
| 682 | Help General | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 | |
| 683 | Literature Lesson | Codeforces | Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) | 5 | |
| 684 | Average Numbers | Codeforces | Codeforces Testing Round #3 | 5 | |
| 685 | Permutations | Codeforces | Codeforces Beta Round #92 (Div. 2 Only) | 5 | |
| 686 | Prime Permutation | Codeforces | Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) | 5 | |
| 687 | Elevator | Codeforces | Codeforces Beta Round #88 | 5 | |
| 688 | Grammar Lessons | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) | 5 | |
| 689 | Help Chef Gerasim | Codeforces | Codeforces Beta Round #78 (Div. 2 Only) | 5 | |
| 690 | Friends | Codeforces | Codeforces Beta Round #76 (Div. 2 Only) | 5 | |
| 691 | Frames | Codeforces | Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) | 5 | |
| 692 | Sets | Codeforces | Yandex.Algorithm 2011 Qualification 2 | 5 | |
| 693 | Sequence Formatting | Codeforces | Yandex.Algorithm Open 2011 Qualification 1 | 5 | |
| 694 | Facetook Priority Wall | Codeforces | Codeforces Beta Round #67 (Div. 2) | 5 | |
| 695 | Subsegments | Codeforces | Codeforces Beta Round #63 (Div. 2) | 5 | |
| 696 | Bets | Codeforces | Codeforces Beta Round #63 (Div. 2) | 5 | |
| 697 | Square Earth? | Codeforces | Codeforces Beta Round #53 | 5 | |
| 698 | Spoilt Permutation | Codeforces | Codeforces Beta Round #52 (Div. 2) | 5 | |
| 699 | Flea travel | Codeforces | Codeforces Beta Round #51 | 5 | |
| 700 | Rock-paper-scissors | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 5 | |
| 701 | T-shirts from Sponsor | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 5 | |
| 702 | Codecraft III | Codeforces | School Team Contest #3 (Winter Computer School 2010/11) | 5 | |
| 703 | Guilty --- to the kitchen! | Codeforces | Codeforces Beta Round #41 | 5 | |
| 704 | Email address | Codeforces | Codeforces Beta Round #40 (Div. 2) | 5 | |
| 705 | Find Color | Codeforces | Codeforces Beta Round #39 | 5 | |
| 706 | Chess | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 5 | |
| 707 | Extra-terrestrial Intelligence | Codeforces | Codeforces Beta Round #36 | 5 | |
| 708 | What is for dinner? | Codeforces | Codeforces Beta Round #33 (Codeforces format) | 5 | |
| 709 | Mail Stamps | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 5 | |
| 710 | World Football Cup | Codeforces | Codeforces Beta Round #19 | 5 | |
| 711 | Cottage Village | Codeforces | Codeforces Beta Round #15 | 5 | |
| 712 | Obsession with Robots | Codeforces | Codeforces Beta Round #8 | 5 | |
| 713 | Memory Manager | Codeforces | Codeforces Beta Round #7 | 5 | |
| 714 | Bombing | SPOJ | 5 | ||
| 715 | Domino | Live Archive | 2006 | Asia - Hanoi | 5 |
| 716 | On the Road to LCPC | A2 Online Judge | 5 | ||
| 717 | Buses Between Cities | Codeforces | Educational Codeforces Round 12 | 5 | |
| 718 | Scrambled | Codeforces | April Fools Day Contest 2016 | 5 | |
| 719 | Fibonacci-ish | Codeforces | Manthan, Codefest 16 | 5 | |
| 720 | Spy Syndrome 2 | Codeforces | Manthan, Codefest 16 | 5 | |
| 721 | Boulevard | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 5 | |
| 722 | Lengthening Sticks | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 5 | |
| 723 | Kyoya and Permutation | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 5 | |
| 724 | Haar Features | Codeforces | Looksery Cup 2015 | 5 | |
| 725 | Mike and Frog | Codeforces | Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) | 5 | |
| 726 | Board Game | Codeforces | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) | 5 | |
| 727 | Statistics of Recompressing Videos | Codeforces | VK Cup 2015 - Qualification Round 2 | 5 | |
| 728 | Sums of Digits | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 5 | |
| 729 | Borya and Hanabi | Codeforces | Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) | 5 | |
| 730 | Balancer | Codeforces | Testing Round #10 | 5 | |
| 731 | Ryouko's Memory Note | Codeforces | Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) | 5 | |
| 732 | Elimination | Codeforces | RCC 2014 Warmup (Div. 2) | 5 | |
| 733 | Data Recovery | Codeforces | Coder-Strike 2014 - Round 2 | 5 | |
| 734 | Pages | Codeforces | Codeforces Round #233 (Div. 2) | 5 | |
| 735 | Counting Sticks | Codeforces | Codeforces Round #231 (Div. 2) | 5 | |
| 736 | Inna and Alarm Clock | Codeforces | Codeforces Round #229 (Div. 2) | 5 | |
| 737 | Fox and Minimal path | Codeforces | Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) | 5 | |
| 738 | George and Number | Codeforces | Codeforces Round #227 (Div. 2) | 5 | |
| 739 | Second-Price Auction | Codeforces | Testing Round #9 | 5 | |
| 740 | Inna and Dima | Codeforces | Codeforces Round #220 (Div. 2) | 5 | |
| 741 | Inna and Pink Pony | Codeforces | Codeforces Round #220 (Div. 2) | 5 | |
| 742 | Making Sequences is Fun | Codeforces | Codeforces Round #219 (Div. 2) | 5 | |
| 743 | Berland Bingo | Codeforces | Codeforces Round #217 (Div. 2) | 5 | |
| 744 | Levko and Array Recovery | Codeforces | Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) | 5 | |
| 745 | Xenia and Hamming | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 5 | |
| 746 | Two Heaps | Codeforces | Codeforces Round #205 (Div. 2) | 5 | |
| 747 | Vasily the Bear and Sequence | Codeforces | Codeforces Round #195 (Div. 2) | 5 | |
| 748 | Square and Rectangles | Codeforces | MemSQL start[c]up Round 1 | 5 | |
| 749 | Sereja and Contest | Codeforces | Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) | 5 | |
| 750 | Calendar | Codeforces | Codeforces Round #183 (Div. 2) | 5 | |
| 751 | Ksusha the Squirrel | Codeforces | Croc Champ 2013 - Round 2 (Div. 2 Edition) | 5 | |
| 752 | SMSC | Codeforces | Croc Champ 2013 - Round 1 | 5 | |
| 753 | Network Mask | Codeforces | Croc Champ 2013 - Qualification Round | 5 | |
| 754 | Orange | Codeforces | April Fools Day Contest 2013 | 5 | |
| 755 | QR code | Codeforces | April Fools Day Contest 2013 | 5 | |
| 756 | Polo the Penguin and XOR operation | Codeforces | Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) | 5 | |
| 757 | Nearest Fraction | Codeforces | Codeforces Round #172 (Div. 2) | 5 | |
| 758 | Maximum Xor Secondary | Codeforces | Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) | 5 | |
| 759 | Convex Shape | Codeforces | Codeforces Round #168 (Div. 2) | 5 | |
| 760 | Balls and Boxes | Codeforces | Codeforces Round #158 (Div. 2) | 5 | |
| 761 | Bracket Sequence | Codeforces | Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) | 5 | |
| 762 | Rock-Paper-Scissors | Codeforces | Croc Champ 2012 - Round 1 | 5 | |
| 763 | Domino | Codeforces | Yandex.Algorithm 2011 Round 1 | 5 | |
| 764 | Colorful Field | Codeforces | Codeforces Beta Round #71 | 5 | |
| 765 | Four Segments | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 | |
| 766 | Theseus and labyrinth | Codeforces | Codeforces Round #354 (Div. 2) | 5 | |
| 767 | Cards Sorting | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) | 5 | |
| 768 | Bitwise Formula | Codeforces | Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) | 5 | |
| 769 | Persistent Bookcase | Codeforces | Codeforces Round #368 (Div. 2) | 5 | |
| 770 | Mr. Bender and Square | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 6 | |
| 771 | Playing with Permutations | Codeforces | Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) | 6 | |
| 772 | Restoring IPv6 | Codeforces | CROC-MBTU 2012, Final Round (Online version, Div. 2) | 6 | |
| 773 | Easy Tape Programming | Codeforces | Codeforces Round #148 (Div. 2) | 6 | |
| 774 | Practice | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 6 | |
| 775 | Cinema | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 6 | |
| 776 | Reducing Fractions | Codeforces | Codeforces Round #137 (Div. 2) | 6 | |
| 777 | Hit Ball | Codeforces | Codeforces Round #128 (Div. 2) | 6 | |
| 778 | Mathematical Analysis Rocks! | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 6 | |
| 779 | Plane of Tanks: Pro | Codeforces | Codeforces Round #115 | 6 | |
| 780 | File List | Codeforces | VK Cup 2012 Round 3 (Unofficial Div. 2 Edition) | 6 | |
| 781 | Bus | Codeforces | Croc Champ 2012 - Qualification Round | 6 | |
| 782 | Wizards and Minimal Spell | Codeforces | Codeforces Round #114 (Div. 2) | 6 | |
| 783 | New Year Cards | Codeforces | Codeforces Round #100 | 6 | |
| 784 | Wallpaper | Codeforces | Codeforces Beta Round #99 (Div. 2) | 6 | |
| 785 | Simple XML | Codeforces | Codeforces Testing Round #2 | 6 | |
| 786 | Transmigration | Codeforces | Codeforces Beta Round #81 | 6 | |
| 787 | Hockey | Codeforces | Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) | 6 | |
| 788 | Keyboard | Codeforces | Codeforces Beta Round #73 (Div. 2 Only) | 6 | |
| 789 | Heroes | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) | 6 | |
| 790 | Points | Codeforces | All-Ukrainian School Olympiad in Informatics | 6 | |
| 791 | Partial Teacher | Codeforces | Manthan 2011 | 6 | |
| 792 | Harry Potter and the History of Magic | Codeforces | Codeforces Beta Round #60 | 6 | |
| 793 | Harry Potter and Three Spells | Codeforces | Codeforces Beta Round #60 | 6 | |
| 794 | Bulls and Cows | Codeforces | Codeforces Beta Round #59 (Div. 2) | 6 | |
| 795 | Tyndex.Brome | Codeforces | Codeforces Beta Round #58 | 6 | |
| 796 | Presents | Codeforces | Codeforces Beta Round #50 | 6 | |
| 797 | Cheaterius's Problem | Codeforces | Codeforces Beta Round #48 | 6 | |
| 798 | Land Lot | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 6 | |
| 799 | Holidays | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 6 | |
| 800 | Cola | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 6 | |
| 801 | Spelling Check | Codeforces | School Team Contest #1 (Winter Computer School 2010/11) | 6 | |
| 802 | Multiplication Table | Codeforces | School Team Contest #1 (Winter Computer School 2010/11) | 6 | |
| 803 | Schedule | Codeforces | Codeforces Beta Round #31 (Div. 2, Codeforces format) | 6 | |
| 804 | Traffic Lights | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 6 | |
| 805 | F1 Champions | Codeforces | Codeforces Beta Round #24 | 6 | |
| 806 | Cinema Cashier | Codeforces | Codeforces Beta Round #10 | 6 | |
| 807 | PLAHTE | SPOJ | 6 | ||
| 808 | FLING1 | SPOJ | 6 | ||
| 809 | CUBE ROOT | SPOJ | 6 | ||
| 810 | International Olympiad | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 6 | |
| 811 | Bear and Up-Down | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 6 | |
| 812 | Bear and Polynomials | Codeforces | VK Cup 2016 - Round 1 | 6 | |
| 813 | Vanya and Brackets | Codeforces | Codeforces Round #308 (Div. 2) | 6 | |
| 814 | Brackets in Implications | Codeforces | Codeforces Round #306 (Div. 2) | 6 | |
| 815 | Infinite Inversions | Codeforces | Codeforces Round #301 (Div. 2) | 6 | |
| 816 | ????????, ?? ?????? ???? ?????? | Codeforces | VK Cup 2015 - Round 1 | 6 | |
| 817 | Cubes | Codeforces | Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) | 6 | |
| 818 | The Maths Lecture | Codeforces | Codeforces Round #287 (Div. 2) | 6 | |
| 819 | Up the hill | Codeforces | Testing Round #11 | 6 | |
| 820 | Restoring Increasing Sequence | Codeforces | Codeforces Round #279 (Div. 2) | 6 | |
| 821 | Appleman and a Sheet of Paper | Codeforces | Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) | 6 | |
| 822 | Washer, Dryer, Folder | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 6 | |
| 823 | Divisors | Codeforces | Codeforces Round #256 (Div. 2) | 6 | |
| 824 | Police Patrol | Codeforces | Codeforces Round #244 (Div. 2) | 6 | |
| 825 | Crash | Codeforces | RCC 2014 Warmup (Div. 2) | 6 | |
| 826 | Spyke Chatting | Codeforces | Coder-Strike 2014 - Round 2 | 6 | |
| 827 | Multi-core Processor | Codeforces | Coder-Strike 2014 - Qualification Round | 6 | |
| 828 | Minesweeper 1D | Codeforces | Codeforces Round #237 (Div. 2) | 6 | |
| 829 | Fly, freebies, fly! | Codeforces | Testing Round #9 | 6 | |
| 830 | Insertion Sort | Codeforces | Codeforces Round #212 (Div. 2) | 6 | |
| 831 | Dima and Containers | Codeforces | Codeforces Round #208 (Div. 2) | 6 | |
| 832 | Compartments | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 6 | |
| 833 | Characteristics of Rectangles | Codeforces | Codeforces Round #194 (Div. 1) | 6 | |
| 834 | Oh Sweet Beaverette | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 6 | |
| 835 | Ants | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 6 | |
| 836 | Candies | Codeforces | Testing Round #6 | 6 | |
| 837 | Rectangle Puzzle II | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 6 | |
| 838 | WTF? | Codeforces | April Fools Day Contest 2013 | 6 | |
| 839 | Main Sequence | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 6 | |
| 840 | Permutation Sum | Codeforces | Codeforces Round #175 (Div. 2) | 6 | |
| 841 | Game on Tree | Codeforces | Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) | 6 | |
| 842 | Sum of Medians | Codeforces | Yandex.Algorithm 2011 Round 1 | 6 | |
| 843 | Polygon | A2 Online Judge | 6 | ||
| 844 | Mister B and PR Shifts | Codeforces | Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) | 6 | |
| 845 | Rooter's Song | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 6 | |
| 846 | Chris and Road | Codeforces | Codeforces Round #365 (Div. 2) | 6 | |
| 847 | Mike and Geometry Problem | Codeforces | Codeforces Round #361 (Div. 2) | 6 | |
| 848 | Furlo and Rublo and Game | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 7 | |
| 849 | Log Stream Analysis | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 7 | |
| 850 | Champions' League | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) | 7 | |
| 851 | Snake | Codeforces | Codeforces Round #139 (Div. 2) | 7 | |
| 852 | Programming Language | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |
| 853 | Football Championship | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |
| 854 | Try and Catch | Codeforces | Codeforces Round #123 (Div. 2) | 7 | |
| 855 | Geometry Horse | Codeforces | Codeforces Round #115 | 7 | |
| 856 | Pentagonal numbers | Codeforces | VK Cup 2012 Wild-card Round 1 | 7 | |
| 857 | Last Chance | Codeforces | Codeforces Beta Round #98 (Div. 2) | 7 | |
| 858 | Hexagonal numbers | Codeforces | Unknown Language Round #4 | 7 | |
| 859 | Boom | Codeforces | School Regional Team Contest, Saratov, 2011 | 7 | |
| 860 | Before Exam | Codeforces | Codeforces Beta Round #90 | 7 | |
| 861 | Treasure Island | Codeforces | Codeforces Beta Round #82 (Div. 2) | 7 | |
| 862 | Help Victoria the Wise | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 7 | |
| 863 | Vasya and Types | Codeforces | Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) | 7 | |
| 864 | Biathlon | Codeforces | Codeforces Beta Round #72 (Div. 2 Only) | 7 | |
| 865 | Big Maximum Sum | Codeforces | Codeforces Beta Round #67 (Div. 2) | 7 | |
| 866 | Petya and File System | Codeforces | Codeforces Beta Round #61 (Div. 2) | 7 | |
| 867 | Martian Architecture | Codeforces | Codeforces Beta Round #53 | 7 | |
| 868 | Corporation Mail | Codeforces | Codeforces Beta Round #52 (Div. 2) | 7 | |
| 869 | Blog Photo | Codeforces | Codeforces Beta Round #49 (Div. 2) | 7 | |
| 870 | Game | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 | |
| 871 | Parking Lot | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 7 | |
| 872 | Journey | Codeforces | Codeforces Beta Round #42 (Div. 2) | 7 | |
| 873 | Game of chess unfinished | Codeforces | Codeforces Beta Round #41 | 7 | |
| 874 | Pacifist frogs | Codeforces | School Team Contest #1 (Winter Computer School 2010/11) | 7 | |
| 875 | Computer Game | Codeforces | Codeforces Beta Round #37 | 7 | |
| 876 | Fractal | Codeforces | Codeforces Beta Round #36 | 7 | |
| 877 | Warehouse | Codeforces | Codeforces Beta Round #35 (Div. 2) | 7 | |
| 878 | Constellation | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 7 | |
| 879 | Chocolate | Codeforces | Codeforces Beta Round #31 (Div. 2, Codeforces format) | 7 | |
| 880 | Codeforces World Finals | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 7 | |
| 881 | Bender Problem | Codeforces | Codeforces Beta Round #28 (Codeforces format) | 7 | |
| 882 | Sequence of points | Codeforces | Codeforces Beta Round #24 | 7 | |
| 883 | Intersection | Codeforces | Codeforces Alpha Round #21 (Codeforces format) | 7 | |
| 884 | Jabber ID | Codeforces | Codeforces Alpha Round #21 (Codeforces format) | 7 | |
| 885 | Logging | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 7 | |
| 886 | Follow Traffic Rules | Codeforces | Codeforces Beta Round #5 | 7 | |
| 887 | ucyhf | Codeforces | April Fools Day Contest | 7 | |
| 888 | THE N WITTY FRIENDS | SPOJ | 7 | ||
| 889 | Little Artem and Random Variable | Codeforces | VK Cup 2016 - Round 2 | 7 | |
| 890 | Sum of Remainders | Codeforces | Educational Codeforces Round 5 | 7 | |
| 891 | Hexagons | Codeforces | Codeforces Round #338 (Div. 2) | 7 | |
| 892 | Guess Your Way Out! II | Codeforces | Codeforces Round #312 (Div. 2) | 7 | |
| 893 | Case of a Top Secret | Codeforces | Codeforces Round #310 (Div. 1) | 7 | |
| 894 | Transmitting Levels | Codeforces | ZeptoLab Code Rush 2015 | 7 | |
| 895 | Mean Requests | Codeforces | VK Cup 2015 - Qualification Round 2 | 7 | |
| 896 | Arthur and Questions | Codeforces | Codeforces Round #293 (Div. 2) | 7 | |
| 897 | Valera and Swaps | Codeforces | Codeforces Round #252 (Div. 2) | 7 | |
| 898 | Nanami's Digital Board | Codeforces | Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) | 7 | |
| 899 | Bug in Code | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) | 7 | |
| 900 | Online Meeting | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) | 7 | |
| 901 | Population Size | Codeforces | Codeforces Round #241 (Div. 2) | 7 | |
| 902 | E-mail Addresses | Codeforces | Coder-Strike 2014 - Round 1 | 7 | |
| 903 | Kicker | Codeforces | Coder-Strike 2014 - Qualification Round | 7 | |
| 904 | Curious Array | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 7 | |
| 905 | Cards | Codeforces | Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) | 7 | |
| 906 | On Corruption and Numbers | Codeforces | Codeforces Round #232 (Div. 2) | 7 | |
| 907 | Genetic Engineering | Codeforces | Rockethon 2014 | 7 | |
| 908 | Inna, Dima and Song | Codeforces | Codeforces Round #229 (Div. 2) | 7 | |
| 909 | Ksenia and Pawns | Codeforces | Codeforces Round #224 (Div. 2) | 7 | |
| 910 | Shave Beaver! | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 7 | |
| 911 | IQ Test | Codeforces | Testing Round #8 | 7 | |
| 912 | Shifting | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 7 | |
| 913 | Circle of Numbers | Codeforces | Codeforces Round #161 (Div. 2) | 7 | |
| 914 | Bear and Square Grid | Codeforces | Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) | 7 | |
| 915 | Crunching Numbers Just for You | Codeforces | April Fools Contest 2017 | 7 | |
| 916 | HTML | Timus | 7 | ||
| 917 | Blog | Timus | 7 | ||
| 918 | Teams Formation | Codeforces | Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) | 7 | |
| 919 | Vladik and chat | Codeforces | Codeforces Round #390 (Div. 2) | 7 | |
| 920 | Working routine | Codeforces | Codeforces Round #367 (Div. 2) | 7 | |
| 921 | Printer | Codeforces | Codeforces Round #154 (Div. 2) | 8 | |
| 922 | Mad Joe | Codeforces | CROC-MBTU 2012, Final Round (Online version, Div. 2) | 8 | |
| 923 | Sweets for Everyone! | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 8 | |
| 924 | Colorado Potato Beetle | Codeforces | Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) | 8 | |
| 925 | Mirror Box | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 8 | |
| 926 | Number Challenge | Codeforces | Codeforces Round #146 (Div. 1) | 8 | |
| 927 | Anniversary | Codeforces | Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) | 8 | |
| 928 | Crosses | Codeforces | Codeforces Round #132 (Div. 2) | 8 | |
| 929 | Little Elephant and Strings | Codeforces | Codeforces Round #129 (Div. 1) | 8 | |
| 930 | Hexagonal Numbers | Codeforces | Surprise Language Round #6 | 8 | |
| 931 | Defragmentation | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 8 | |
| 932 | A Piece of Cake | Codeforces | April Fools Day Contest | 8 | |
| 933 | Piet | Codeforces | Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) | 8 | |
| 934 | Gnikool Ssalg | Codeforces | Unknown Language Round #4 | 8 | |
| 935 | Vectors | Codeforces | Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) | 8 | |
| 936 | Chip Play | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) | 8 | |
| 937 | Widget Library | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) | 8 | |
| 938 | Beautiful Road | Codeforces | Codeforces Beta Round #73 (Div. 1 Only) | 8 | |
| 939 | Game | Codeforces | Codeforces Beta Round #63 (Div. 2) | 8 | |
| 940 | Factorial | Codeforces | Unknown Language Round #1 | 8 | |
| 941 | Sweets Game | Codeforces | Codeforces Beta Round #59 (Div. 2) | 8 | |
| 942 | Team Arrangement | Codeforces | Codeforces Beta Round #55 (Div. 2) | 8 | |
| 943 | Cutting Jigsaw Puzzle | Codeforces | Codeforces Beta Round #50 | 8 | |
| 944 | Crossword | Codeforces | Codeforces Beta Round #44 (Div. 2) | 8 | |
| 945 | Vasya the Architect | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 8 | |
| 946 | Collisions | Codeforces | Codeforces Beta Round #34 (Div. 2) | 8 | |
| 947 | How Many Squares? | Codeforces | Codeforces Beta Round #11 | 8 | |
| 948 | Defining Macros | Codeforces | Codeforces Beta Round #7 | 8 | |
| 949 | Zbazi in Zeydabad | Codeforces | Educational Codeforces Round 8 | 8 | |
| 950 | Finals in arithmetic | Codeforces | Codeforces Round #342 (Div. 2) | 8 | |
| 951 | New Year and Cleaning | Codeforces | Good Bye 2015 | 8 | |
| 952 | Misha and Palindrome Degree | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 8 | |
| 953 | Strange Sorting | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 8 | |
| 954 | Crystal Ball Sequence | Codeforces | Surprise Language Round #7 | 8 | |
| 955 | Maze 1D | Codeforces | Codeforces Round #237 (Div. 2) | 8 | |
| 956 | Volcanoes | Codeforces | Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) | 8 | |
| 957 | Sereja and Tree | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 8 | |
| 958 | Broken Monitor | Codeforces | Codeforces Round #217 (Div. 2) | 8 | |
| 959 | Dima and Magic Guitar | Codeforces | Codeforces Round #214 (Div. 2) | 8 | |
| 960 | Game | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 8 | |
| 961 | Letter A | Codeforces | Codeforces Beta Round #13 | 8 | |
| 962 | Vanya and Balloons | Codeforces | Codeforces Round #355 (Div. 2) | 8 | |
| 963 | Dance Revolution | Timus | 8 | ||
| 964 | Dormitory | Codeforces | Codeforces Round #155 (Div. 2) | 9 | |
| 965 | Rats | Codeforces | Codeforces Round #155 (Div. 2) | 9 | |
| 966 | Race | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 9 | |
| 967 | Polycarpus is Looking for Good Substrings | Codeforces | VK Cup 2012 Finals (unofficial online-version) | 9 | |
| 968 | Tractor College | Codeforces | Codeforces Round #126 (Div. 2) | 9 | |
| 969 | Array Sorting | Codeforces | Surprise Language Round #6 | 9 | |
| 970 | Binary Notation | Codeforces | Surprise Language Round #6 | 9 | |
| 971 | HQ9+ | Codeforces | Surprise Language Round #6 | 9 | |
| 972 | Asterisks | Codeforces | Surprise Language Round #6 | 9 | |
| 973 | LCM | Codeforces | Surprise Language Round #6 | 9 | |
| 974 | A + Reverse B | Codeforces | Surprise Language Round #6 | 9 | |
| 975 | Battlefield | Codeforces | Codeforces Round #117 (Div. 2) | 9 | |
| 976 | Deputies | Codeforces | Croc Champ 2012 - Round 1 | 9 | |
| 977 | Lucky Pair | Codeforces | Codeforces Round #104 (Div. 1) | 9 | |
| 978 | Cycle | Codeforces | Codeforces Beta Round #97 (Div. 1) | 9 | |
| 979 | Lucky Segments | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) | 9 | |
| 980 | Item World | Codeforces | Codeforces Beta Round #81 | 9 | |
| 981 | Candies and Stones | Codeforces | Codeforces Beta Round #79 (Div. 1 Only) | 9 | |
| 982 | A+B | Codeforces | Unknown Language Round #3 | 9 | |
| 983 | Friendly Numbers | Codeforces | Unknown Language Round #3 | 9 | |
| 984 | Carpeting the Room | Codeforces | Unknown Language Round #3 | 9 | |
| 985 | Domino | Codeforces | Yandex.Algorithm 2011 Finals | 9 | |
| 986 | Azembler | Codeforces | Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) | 9 | |
| 987 | Domino Carpet | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) | 9 | |
| 988 | Goofy Numbers | Codeforces | Unknown Language Round #2 | 9 | |
| 989 | Reverse It! | Codeforces | Unknown Language Round #2 | 9 | |
| 990 | Solitaire | Codeforces | Codeforces Beta Round #65 (Div. 2) | 9 | |
| 991 | Information Reform | Codeforces | Codeforces Beta Round #64 | 9 | |
| 992 | Table | Codeforces | Unknown Language Round #1 | 9 | |
| 993 | Inquisition | Codeforces | Codeforces Beta Round #58 | 9 | |
| 994 | Geometrical problem | Codeforces | Codeforces Beta Round #48 | 9 | |
| 995 | Race | Codeforces | Codeforces Beta Round #42 (Div. 2) | 9 | |
| 996 | Two Paths | Codeforces | Codeforces Beta Round #36 | 9 | |
| 997 | Bowls | Codeforces | Codeforces Beta Round #36 | 9 | |
| 998 | Hide-and-Seek | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 9 | |
| 999 | Map | Codeforces | Codeforces Beta Round #15 | 9 | |
| 1000 | O Problema do Sapateiro Viajante | SPOJ Brazil | 9 | ||
| 1001 | BLOCK_D SOLVER | SPOJ | 9 | ||
| 1002 | BF_MODULUS | SPOJ | 9 | ||
| 1003 | Fibonacci-ish II | Codeforces | Manthan, Codefest 16 | 9 | |
| 1004 | Berland Local Positioning System | Codeforces | Codeforces Round #298 (Div. 2) | 9 | |
| 1005 | Pasha and Pipe | Codeforces | Codeforces Round #293 (Div. 2) | 9 | |
| 1006 | Physical Education and Buns | Codeforces | Codeforces Round #231 (Div. 2) | 9 | |
| 1007 | Game with Points | Codeforces | Testing Round #9 | 9 | |
| 1008 | Red and Black Tree | Codeforces | Codeforces Round #221 (Div. 1) | 9 | |
| 1009 | Dima and Kicks | Codeforces | Codeforces Round #208 (Div. 2) | 9 | |
| 1010 | Xenia and String Problem | Codeforces | Codeforces Round #207 (Div. 1) | 9 | |
| 1011 | Binary Key | Codeforces | Codeforces Round #193 (Div. 2) | 9 | |
| 1012 | Shaass and Painter Robot | Codeforces | Codeforces Round #178 (Div. 2) | 9 | |
| 1013 | Polo the Penguin and Lucky Numbers | Codeforces | Codeforces Round #177 (Div. 1) | 9 | |
| 1014 | Mirror Room | Codeforces | Codeforces Round #168 (Div. 1) | 9 | |
| 1015 | Greedy Elevator | Codeforces | Codeforces Round #159 (Div. 2) | 9 | |
| 1016 | Pairs | Codeforces | Yandex.Algorithm Open 2011 Qualification 1 | 9 | |
| 1017 | Bear and Chase | Codeforces | Codeforces Round #356 (Div. 1) | 9 | |
| 1018 | Black Widow | Codeforces | Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) | 9 | |
| 1019 | Sagheer and Kindergarten | Codeforces | Codeforces Round #417 (Div. 2) | 9 | |
| 1020 | Strange Radiation | Codeforces | Codeforces Round #425 (Div. 2) | 9 | |
| 1021 | Tree and Table | Codeforces | Codeforces Round #153 (Div. 1) | 10 | |
| 1022 | Tape Programming | Codeforces | Codeforces Round #148 (Div. 1) | 10 | |
| 1023 | Stack | Codeforces | Surprise Language Round #6 | 10 | |
| 1024 | Gnomes of Might and Magic | Codeforces | Codeforces Round #115 | 10 | |
| 1025 | A polyline | Codeforces | April Fools Day Contest | 10 | |
| 1026 | Tree or not Tree | Codeforces | Codeforces Beta Round #88 | 10 | |
| 1027 | Sleeping | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) | 10 | |
| 1028 | Entertaining Geodetics | Codeforces | Codeforces Beta Round #81 | 10 | |
| 1029 | Battleship | Codeforces | Unknown Language Round #3 | 10 | |
| 1030 | Name the album | Codeforces | Unknown Language Round #3 | 10 | |
| 1031 | Polynom | Codeforces | Unknown Language Round #3 | 10 | |
| 1032 | Help King | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 10 | |
| 1033 | Robot in Basement | Codeforces | Yandex.Algorithm 2011 Finals | 10 | |
| 1034 | INI-file | Codeforces | Unknown Language Round #2 | 10 | |
| 1035 | Harry Potter and Moving Staircases | Codeforces | Codeforces Beta Round #60 | 10 | |
| 1036 | Shooting Gallery | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 10 | |
| 1037 | Inverse Function | Codeforces | School Team Contest #1 (Winter Computer School 2010/11) | 10 | |
| 1038 | ALIGNSUBTRACT | SPOJ | 10 | ||
| 1039 | Digits of Number Pi | Codeforces | Codeforces Round #325 (Div. 1) | 10 | |
| 1040 | Design Tutorial: Learn from a Game | Codeforces | Codeforces Round #270 | 10 | |
| 1041 | Hamming Triples | Codeforces | Codeforces Round #238 (Div. 1) | 10 | |
| 1042 | Two Rooted Trees | Codeforces | Codeforces Round #236 (Div. 1) | 10 | |
| 1043 | Inna and Babies | Codeforces | Codeforces Round #220 (Div. 2) | 10 | |
| 1044 | Two Circles | Codeforces | Codeforces Round #211 (Div. 2) | 10 | |
| 1045 | Vasily the Bear and Painting Square | Codeforces | Codeforces Round #195 (Div. 2) | 10 | |
| 1046 | Deja Vu | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 | |
| 1047 | Escaping on Beaveractor | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 | |
| 1048 | Escaping on Beaveractor | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 | |
| 1049 | Suns and Rays | Codeforces | ABBYY Cup 3.0 | 10 | |
| 1050 | Suns and Rays | Codeforces | ABBYY Cup 3.0 | 10 | |
| 1051 | Sequence Transformation | Codeforces | Codeforces Round #172 (Div. 1) | 10 | |
| 1052 | A Kleene Implementation | SPOJ | 10 | ||
| 1053 | Red-Black Cobweb | Codeforces | Codeforces Round #426 (Div. 1) | 10 | |
| 1054 | Perpetual Motion Machine | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) | 10 |