| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Aggressive cows | SPOJ | 1 | ||
| 2 | Copying Books | SPOJ | 1 | ||
| 3 | Fill the Cisterns | SPOJ | 1 | ||
| 4 | Pie | SPOJ | 1 | ||
| 5 | Pyramids | SPOJ | 1 | ||
| 6 | Sphere in a tetrahedron | SPOJ | 1 | ||
| 7 | 4 values whose sum is 0 | SPOJ | 1 | ||
| 8 | ABCDEF | SPOJ | 1 | ||
| 9 | Help the soldier | SPOJ | 1 | ||
| 10 | Rent your airplane and make money | SPOJ | 1 | ||
| 11 | K12 - Building Construction | SPOJ | 1 | ||
| 12 | Hamster flight | SPOJ | 1 | ||
| 13 | Eko | SPOJ | 1 | ||
| 14 | String it out | SPOJ | 1 | ||
| 15 | Not a Triangle | SPOJ | 1 | ||
| 16 | Shake Shake Shaky | SPOJ | 1 | ||
| 17 | Exact Sum | UVA | 1 | ||
| 18 | 4 Values whose Sum is 0 | TJU | 1 | ||
| 19 | Solve It | UVA | 1 | ||
| 20 | Touch of Venom | SPOJ | 1 | ||
| 21 | The Playboy Chimp | UVA | 1 | ||
| 22 | Where is the Marble? | UVA | 1 | ||
| 23 | Books | Codeforces | Codeforces Round #171 (Div. 2) | 1 | |
| 24 | Cable master | PKU | 1 | ||
| 25 | Aggressive cows | PKU | 1 | ||
| 26 | River Hopscotch | PKU | 1 | ||
| 27 | Monthly Expense | PKU | 1 | ||
| 28 | Queries about less or equal elements | Codeforces | Educational Codeforces Round 2 | 1 | |
| 29 | Kefa and Company | Codeforces | Codeforces Round #321 (Div. 2) | 1 | |
| 30 | Vanya and Lanterns | Codeforces | Codeforces Round #280 (Div. 2) | 1 | |
| 31 | Worms | Codeforces | Codeforces Round #271 (Div. 2) | 1 | |
| 32 | Number of Ways | Codeforces | Codeforces Round #266 (Div. 2) | 1 | |
| 33 | Binary Search Tree | Live Archive | 2010 | Asia - Daejeon | 1 |
| 34 | Interesting drink | Codeforces | Codeforces Round #367 (Div. 2) | 1 | |
| 35 | Chloe and the sequence | Codeforces | Codeforces Round #384 (Div. 2) | 1 | |
| 36 | GCD LCM | UVA | 1 | ||
| 37 | Prime Frequency | UVA | 1 | ||
| 38 | Ternary | UVA | 1 | ||
| 39 | DZY Loves Chessboard | Codeforces | Codeforces Round #254 (Div. 2) | 1 | |
| 40 | Crossed Ladders | UVA | 2 | ||
| 41 | Burning Midnight Oil | Codeforces | Codeforces Round #112 (Div. 2) | 2 | |
| 42 | Mummy Madness | Live Archive | 2011 | World Finals - Orlando | 2 |
| 43 | Copying Books | UVA | 2 | ||
| 44 | Points on Line | Codeforces | Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) | 2 | |
| 45 | Rank List | Codeforces | Codeforces Round #113 (Div. 2) | 2 | |
| 46 | Password | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 2 | |
| 47 | Lucky Numbers (easy) | Codeforces | Codeforces Beta Round #77 (Div. 2 Only) | 2 | |
| 48 | Distributing Ballot Boxes | SPOJ | 2 | ||
| 49 | Fill the Containers | UVA | 2 | ||
| 50 | Popes | UVA | 2 | ||
| 51 | Multiplication Table | Codeforces | Codeforces Round #256 (Div. 2) | 2 | |
| 52 | More Cowbell | Codeforces | Codeforces Round #334 (Div. 2) | 2 | |
| 53 | Drying | PKU | 2 | ||
| 54 | Dropping tests | PKU | 2 | ||
| 55 | K Best | PKU | 2 | ||
| 56 | Median | PKU | 2 | ||
| 57 | Moo University - Financial Aid | PKU | 2 | ||
| 58 | Chat Order | Codeforces | VK Cup 2016 - Qualification Round 1 | 2 | |
| 59 | Chain Reaction | Codeforces | Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) | 2 | |
| 60 | Geometric Progression | Codeforces | Codeforces Round #Pi (Div. 2) | 2 | |
| 61 | Tourist's Notes | Codeforces | Codeforces Round #300 | 2 | |
| 62 | Counting Kangaroos is Fun | Codeforces | Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) | 2 | |
| 63 | Hamburgers | Codeforces | Codeforces Round #218 (Div. 2) | 2 | |
| 64 | Mafia | Codeforces | Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) | 2 | |
| 65 | Polo the Penguin and Matrix | Codeforces | Codeforces Round #177 (Div. 2) | 2 | |
| 66 | k-Multiple Free Set | Codeforces | Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) | 2 | |
| 67 | Prime Matrix | Codeforces | Codeforces Round #166 (Div. 2) | 2 | |
| 68 | Another Problem on Strings | Codeforces | Codeforces Round #112 (Div. 2) | 2 | |
| 69 | Vasya and String | Codeforces | Codeforces Round #354 (Div. 2) | 2 | |
| 70 | New Year and Rating | Codeforces | Good Bye 2016 | 2 | |
| 71 | String Game | Codeforces | Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) | 2 | |
| 72 | Karen and Coffee | Codeforces | Codeforces Round #419 (Div. 2) | 2 | |
| 73 | Sagheer and Nubian Market | Codeforces | Codeforces Round #417 (Div. 2) | 2 | |
| 74 | Anton and Fairy Tale | Codeforces | Codeforces Round #404 (Div. 2) | 2 | |
| 75 | Binary Search Tree | SPOJ | 2 | ||
| 76 | ICPC Scoreboard | Live Archive | 2007 | Latin America - South America | 2 |
| 77 | Meteors | SPOJ | 2 | ||
| 78 | Funny scales | SPOJ | 2 | ||
| 79 | ICPC Scoreboard | SPOJ | 3 | ||
| 80 | Physics Practical | Codeforces | Codeforces Round #154 (Div. 2) | 3 | |
| 81 | Primes on Interval | Codeforces | Codeforces Round #147 (Div. 2) | 3 | |
| 82 | Non-square Equation | Codeforces | Codeforces Round #144 (Div. 2) | 3 | |
| 83 | To Add or Not to Add | Codeforces | Codeforces Round #143 (Div. 2) | 3 | |
| 84 | Array | Codeforces | Codeforces Round #138 (Div. 2) | 3 | |
| 85 | Little Elephant and Array | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 3 | |
| 86 | Little Elephant and Interval | Codeforces | Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) | 3 | |
| 87 | Let's Watch Football | Codeforces | Codeforces Round #123 (Div. 2) | 3 | |
| 88 | Funky Numbers | Codeforces | Codeforces Round #121 (Div. 2) | 3 | |
| 89 | Roads Repair | SPOJ | 3 | ||
| 90 | grace marks | SPOJ | 3 | ||
| 91 | Trick or Treat | SPOJ | 3 | ||
| 92 | Glasnici | SPOJ | 3 | ||
| 93 | Towers of Hanoi | UVA | 3 | ||
| 94 | Through the Desert | UVA | 3 | ||
| 95 | Vasya and Basketball | Codeforces | Codeforces Round #281 (Div. 2) | 3 | |
| 96 | Fantastic Discovery | SPOJ | 3 | ||
| 97 | Cow Acrobats | PKU | 3 | ||
| 98 | Matrix | PKU | 3 | ||
| 99 | Telephone Lines | PKU | 3 | ||
| 100 | Hard Process | Codeforces | Educational Codeforces Round 11 | 3 | |
| 101 | Bear and Blocks | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 3 | |
| 102 | Mike and Feet | Codeforces | Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) | 3 | |
| 103 | Glass Carving | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 3 | |
| 104 | Watto and Mechanism | Codeforces | Codeforces Round #291 (Div. 2) | 3 | |
| 105 | Maximum Value | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 3 | |
| 106 | Long Jumps | Codeforces | Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) | 3 | |
| 107 | Present | Codeforces | Codeforces Round #262 (Div. 2) | 3 | |
| 108 | Megacity | Codeforces | Codeforces Round #242 (Div. 2) | 3 | |
| 109 | Booking System | Codeforces | Codeforces Round #241 (Div. 2) | 3 | |
| 110 | Mashmokh and Tokens | Codeforces | Codeforces Round #240 (Div. 2) | 3 | |
| 111 | Bear and Prime Numbers | Codeforces | Codeforces Round #226 (Div. 2) | 3 | |
| 112 | Bubble Sort Graph | Codeforces | Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) | 3 | |
| 113 | Quiz | Codeforces | Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) | 3 | |
| 114 | Eugeny and Play List | Codeforces | Codeforces Round #182 (Div. 2) | 3 | |
| 115 | LLPS | Codeforces | Codeforces Round #127 (Div. 2) | 3 | |
| 116 | Dress'em in Vests! | Codeforces | VK Cup 2012 Round 1 | 3 | |
| 117 | Modified GCD | Codeforces | Codeforces Beta Round #67 (Div. 2) | 3 | |
| 118 | Grapevine | UVA | 3 | ||
| 119 | Exams | Codeforces | Codeforces Round #377 (Div. 2) | 3 | |
| 120 | Alyona and Spreadsheet | Codeforces | Codeforces Round #401 (Div. 2) | 3 | |
| 121 | Cloud of Hashtags | Codeforces | Codeforces Round #401 (Div. 2) | 3 | |
| 122 | Vasiliy's Multiset | Codeforces | Codeforces Round #367 (Div. 2) | 3 | |
| 123 | Planets | Codeforces | Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) | 4 | |
| 124 | Well-known Numbers | Codeforces | Codeforces Round #139 (Div. 2) | 4 | |
| 125 | Little Elephant and Cards | Codeforces | Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) | 4 | |
| 126 | Find Pair | Codeforces | Codeforces Round #111 (Div. 2) | 4 | |
| 127 | String Manipulation 1.0 | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |
| 128 | Matchmaker | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |
| 129 | Steps | Codeforces | Codeforces Round #108 (Div. 2) | 4 | |
| 130 | Escape | Codeforces | Codeforces Round #105 (Div. 2) | 4 | |
| 131 | New Year Snowmen | Codeforces | Codeforces Round #100 | 4 | |
| 132 | Queue | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) | 4 | |
| 133 | Binary Number | Codeforces | Codeforces Beta Round #75 (Div. 2 Only) | 4 | |
| 134 | Garland | PKU | 4 | ||
| 135 | Image Preview | Codeforces | Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) | 4 | |
| 136 | Longest k-Good Segment | Codeforces | Educational Codeforces Round 5 | 4 | |
| 137 | Peter and Snow Blower | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 4 | |
| 138 | Pasha and Phone | Codeforces | Codeforces Round #330 (Div. 2) | 4 | |
| 139 | Weakness and Poorness | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 4 | |
| 140 | Tree Requests | Codeforces | Codeforces Round #316 (Div. 2) | 4 | |
| 141 | One-Dimensional Battle Ships | Codeforces | Codeforces Round #Pi (Div. 2) | 4 | |
| 142 | GukiZ hates Boxes | Codeforces | Codeforces Round #307 (Div. 2) | 4 | |
| 143 | Tavas and Karafs | Codeforces | Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1) | 4 | |
| 144 | A and B and Lecture Rooms | Codeforces | Codeforces Round #294 (Div. 2) | 4 | |
| 145 | Tennis Game | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 4 | |
| 146 | Vanya and Computer Game | Codeforces | Codeforces Round #280 (Div. 2) | 4 | |
| 147 | Fight the Monster | Codeforces | Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) | 4 | |
| 148 | Friends and Presents | Codeforces | Codeforces Round #275 (Div. 2) | 4 | |
| 149 | MUH and House of Cards | Codeforces | Codeforces Round #269 (Div. 2) | 4 | |
| 150 | Civilization | Codeforces | Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) | 4 | |
| 151 | Devu and his Brother | Codeforces | Codeforces Round #251 (Div. 2) | 4 | |
| 152 | Sereja and Prefixes | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 4 | |
| 153 | Pair of Numbers | Codeforces | Codeforces Round #209 (Div. 2) | 4 | |
| 154 | Ciel and Robot | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 4 | |
| 155 | Pipeline | Codeforces | Codeforces Round #176 (Div. 2) | 4 | |
| 156 | Petya and Divisors | Codeforces | Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) | 4 | |
| 157 | Almost Arithmetical Progression | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 4 | |
| 158 | Robin Hood | Codeforces | Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) | 4 | |
| 159 | As Fast As Possible | Codeforces | Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) | 4 | |
| 160 | Office Keys | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) | 4 | |
| 161 | Alyona and a tree | Codeforces | Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) | 4 | |
| 162 | Mike and Chocolate Thieves | Codeforces | Codeforces Round #361 (Div. 2) | 4 | |
| 163 | XK Segments | Codeforces | Codeforces Round #448 (Div. 2) | 4 | |
| 164 | Showstopper | SPOJ | 5 | ||
| 165 | Energy exchange | Codeforces | Codeforces Beta Round #62 | 5 | |
| 166 | Guilty --- to the kitchen! | Codeforces | Codeforces Beta Round #41 | 5 | |
| 167 | Unordered Subsequence | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 5 | |
| 168 | Monitor | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 5 | |
| 169 | Exposition | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 5 | |
| 170 | Showstopper | PKU | 5 | ||
| 171 | Robot Rapping Results Report | Codeforces | CROC 2016 - Elimination Round | 5 | |
| 172 | Enduring Exodus | Codeforces | CROC 2016 - Elimination Round | 5 | |
| 173 | Skills | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 5 | |
| 174 | Chip 'n Dale Rescue Rangers | Codeforces | Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) | 5 | |
| 175 | Gourmet and Banquet | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 5 | |
| 176 | Kyoya and Permutation | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 5 | |
| 177 | Degenerate Matrix | Codeforces | Looksery Cup 2015 | 5 | |
| 178 | Handshakes | Codeforces | Codeforces Round #298 (Div. 2) | 5 | |
| 179 | The Art of Dealing with ATM | Codeforces | VK Cup 2015 - Round 1 | 5 | |
| 180 | R2D2 and Droid Army | Codeforces | Codeforces Round #291 (Div. 2) | 5 | |
| 181 | Strip | Codeforces | Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) | 5 | |
| 182 | Pillars | Codeforces | Codeforces Round #271 (Div. 2) | 5 | |
| 183 | Preparing for the Contest | Codeforces | Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) | 5 | |
| 184 | Making Sequences is Fun | Codeforces | Codeforces Round #219 (Div. 2) | 5 | |
| 185 | Sereja ans Anagrams | Codeforces | Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) | 5 | |
| 186 | Renting Bikes | Codeforces | Codeforces Round #211 (Div. 2) | 5 | |
| 187 | Levko and Array | Codeforces | Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) | 5 | |
| 188 | Read Time | Codeforces | Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) | 5 | |
| 189 | Yaroslav and Time | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 5 | |
| 190 | Cycles | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 5 | |
| 191 | Olympiad | Codeforces | Codeforces Round #137 (Div. 2) | 5 | |
| 192 | Blood Cousins | Codeforces | Codeforces Round #130 (Div. 2) | 5 | |
| 193 | Misha and Permutations Summation | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 5 | |
| 194 | Road to Post Office | Codeforces | Educational Codeforces Round 15 | 5 | |
| 195 | Copying Data | Codeforces | Croc Champ 2013 - Round 1 | 5 | |
| 196 | The Bakery | Codeforces | Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) | 5 | |
| 197 | Complete The Graph | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 5 | |
| 198 | Leaving Auction | Codeforces | Codeforces Round #388 (Div. 2) | 5 | |
| 199 | Cartons of milk | Codeforces | Codeforces Round #398 (Div. 2) | 5 | |
| 200 | Fedor and coupons | Codeforces | Codeforces Round #390 (Div. 2) | 5 | |
| 201 | Vitya and Strange Lesson | Codeforces | Codeforces Round #430 (Div. 2) | 5 | |
| 202 | Friends and Subsequences | Codeforces | Codeforces Round #361 (Div. 2) | 5 | |
| 203 | Little Elephant and LCM | Codeforces | Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) | 6 | |
| 204 | Mr. Bender and Square | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 6 | |
| 205 | Towers | Codeforces | Codeforces Round #142 (Div. 1) | 6 | |
| 206 | Guess That Car! | Codeforces | Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) | 6 | |
| 207 | Mushroom Scientists | Codeforces | Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) | 6 | |
| 208 | Number of Triplets | Codeforces | Croc Champ 2012 - Round 2 (Unofficial Div. 2 Edition) | 6 | |
| 209 | Hot Bath | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 6 | |
| 210 | Buses | Codeforces | Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) | 6 | |
| 211 | Sum of Medians | Codeforces | Yandex.Algorithm 2011 Round 1 | 6 | |
| 212 | Doctor | Codeforces | Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) | 6 | |
| 213 | Tyndex.Brome | Codeforces | Codeforces Beta Round #58 | 6 | |
| 214 | Stripe 2 | Codeforces | Codeforces Alpha Round #21 (Codeforces format) | 6 | |
| 215 | Array | Codeforces | Codeforces Beta Round #53 | 6 | |
| 216 | Boxes of Chocolate | SPOJ | 6 | ||
| 217 | CUBE ROOT | SPOJ | 6 | ||
| 218 | Delivery Bears | Codeforces | IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) | 6 | |
| 219 | Gadgets for dollars and pounds | Codeforces | Educational Codeforces Round 3 | 6 | |
| 220 | Hiring | Codeforces | 2015-2016 ACM-ICPC, NEERC, Southern Subregional Contest (Online Mirror, ACM-ICPC Rules, Teams Preferred) | 6 | |
| 221 | GukiZ and GukiZiana | Codeforces | Codeforces Round #307 (Div. 2) | 6 | |
| 222 | Infinite Inversions | Codeforces | Codeforces Round #301 (Div. 2) | 6 | |
| 223 | Anya and Cubes | Codeforces | Codeforces Round #297 (Div. 2) | 6 | |
| 224 | Restoring Increasing Sequence | Codeforces | Codeforces Round #279 (Div. 2) | 6 | |
| 225 | Random Task | Codeforces | Codeforces Round #247 (Div. 2) | 6 | |
| 226 | Police Patrol | Codeforces | Codeforces Round #244 (Div. 2) | 6 | |
| 227 | Fly, freebies, fly! | Codeforces | Testing Round #9 | 6 | |
| 228 | Number Busters | Codeforces | Codeforces Round #224 (Div. 2) | 6 | |
| 229 | Valera and Queries | Codeforces | Codeforces Round #216 (Div. 2) | 6 | |
| 230 | Banana | Codeforces | MemSQL start[c]up Round 2 - online version | 6 | |
| 231 | Characteristics of Rectangles | Codeforces | Codeforces Round #194 (Div. 1) | 6 | |
| 232 | Stadium and Games | Codeforces | MemSQL start[c]up Round 1 | 6 | |
| 233 | Sereja and Periods | Codeforces | Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) | 6 | |
| 234 | Santa Claus and Tangerines | Codeforces | Technocup 2017 - Elimination Round 3 | 6 | |
| 235 | Searching Rectangles | Codeforces | Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) | 6 | |
| 236 | Glad to see you! | Codeforces | Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) | 6 | |
| 237 | Vladik and cards | Codeforces | Codeforces Round #384 (Div. 2) | 6 | |
| 238 | Binary Search Tree | UVA | 6 | ||
| 239 | Building Bridge | Codeforces | CROC-MBTU 2012, Final Round (Online version, Div. 2) | 7 | |
| 240 | Robo-Footballer | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 7 | |
| 241 | Blood Cousins Return | Codeforces | Codeforces Round #151 (Div. 2) | 7 | |
| 242 | Log Stream Analysis | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 7 | |
| 243 | Spider's Web | Codeforces | Codeforces Round #133 (Div. 2) | 7 | |
| 244 | Programming Language | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |
| 245 | Cubes | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 7 | |
| 246 | Lemmings | Codeforces | VK Cup 2012 Round 2 | 7 | |
| 247 | Mushroom Gnomes - 2 | Codeforces | Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) | 7 | |
| 248 | Biathlon | Codeforces | Codeforces Beta Round #72 (Div. 2 Only) | 7 | |
| 249 | Optical Experiment | Codeforces | Manthan 2011 | 7 | |
| 250 | Harry Potter and the Golden Snitch | Codeforces | Codeforces Beta Round #60 | 7 | |
| 251 | Domino Principle | Codeforces | Codeforces Beta Round #52 (Div. 2) | 7 | |
| 252 | Blog Photo | Codeforces | Codeforces Beta Round #49 (Div. 2) | 7 | |
| 253 | Three Base Stations | Codeforces | Codeforces Beta Round #48 | 7 | |
| 254 | Zip-line | Codeforces | Codeforces Round #345 (Div. 1) | 7 | |
| 255 | Hostname Aliases | Codeforces | CROC 2016 - Qualification | 7 | |
| 256 | Simple Skewness | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 7 | |
| 257 | Professor GukiZ and Two Arrays | Codeforces | Educational Codeforces Round 6 | 7 | |
| 258 | Hexagons | Codeforces | Codeforces Round #338 (Div. 2) | 7 | |
| 259 | Case of a Top Secret | Codeforces | Codeforces Round #310 (Div. 1) | 7 | |
| 260 | Nudist Beach | Codeforces | Codeforces Round #309 (Div. 1) | 7 | |
| 261 | Arthur and Questions | Codeforces | Codeforces Round #293 (Div. 2) | 7 | |
| 262 | Hiking | Codeforces | Codeforces Round #277.5 (Div. 2) | 7 | |
| 263 | Sign on Fence | Codeforces | Codeforces Round #276 (Div. 1) | 7 | |
| 264 | Hack it! | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 7 | |
| 265 | Sereja and Squares | Codeforces | Codeforces Round #243 (Div. 1) | 7 | |
| 266 | 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 | |
| 267 | Inna and Binary Logic | Codeforces | Codeforces Round #234 (Div. 2) | 7 | |
| 268 | George and Cards | Codeforces | Codeforces Round #227 (Div. 2) | 7 | |
| 269 | Inna and Sequence | Codeforces | Codeforces Round #220 (Div. 2) | 7 | |
| 270 | Dima and Trap Graph | Codeforces | Codeforces Round #214 (Div. 2) | 7 | |
| 271 | Empire Strikes Back | Codeforces | Codeforces Round #181 (Div. 2) | 7 | |
| 272 | Printer | Codeforces | Codeforces Round #154 (Div. 2) | 8 | |
| 273 | Sweets for Everyone! | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 8 | |
| 274 | Thwarting Demonstrations | Codeforces | Codeforces Round #121 (Div. 1) | 8 | |
| 275 | Space Voyage | Codeforces | ABBYY Cup 2.0 - Easy | 8 | |
| 276 | Smile House | Codeforces | Codeforces Testing Round #4 | 8 | |
| 277 | Present to Mom | Codeforces | Codeforces Beta Round #95 (Div. 2) | 8 | |
| 278 | MST Company | Codeforces | Codeforces Testing Round #2 | 8 | |
| 279 | Space Rescuers | Codeforces | Codeforces Beta Round #82 (Div. 2) | 8 | |
| 280 | Guard Towers | Codeforces | Yandex.Algorithm 2011 Round 1 | 8 | |
| 281 | Petya and Tree | Codeforces | Yandex.Algorithm 2011 Round 1 | 8 | |
| 282 | Tourist | Codeforces | All-Ukrainian School Olympiad in Informatics | 8 | |
| 283 | Need For Brake | Codeforces | Codeforces Beta Round #66 | 8 | |
| 284 | Lucky Tickets | Codeforces | Codeforces Beta Round #64 | 8 | |
| 285 | Bombing | Codeforces | Codeforces Beta Round #47 | 8 | |
| 286 | Tricky and Clever Password | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 8 | |
| 287 | Don't fear, DravDe is kind | Codeforces | Codeforces Beta Round #28 (Codeforces format) | 8 | |
| 288 | Berland collider | Codeforces | Codeforces Beta Round #24 | 8 | |
| 289 | Two Friends | Codeforces | Codeforces Beta Round #8 | 8 | |
| 290 | Bear and Bowling 4 | Codeforces | Educational Codeforces Round 11 | 8 | |
| 291 | Startup Funding | Codeforces | Manthan, Codefest 16 | 8 | |
| 292 | Preorder Test | Codeforces | 8VC Venture Cup 2016 - Final Round | 8 | |
| 293 | Electric Charges | Codeforces | AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) | 8 | |
| 294 | New Year and Cleaning | Codeforces | Good Bye 2015 | 8 | |
| 295 | Max and Bike | Codeforces | Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) | 8 | |
| 296 | Misha and Palindrome Degree | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 8 | |
| 297 | DZY Loves Planting | Codeforces | Codeforces Round #254 (Div. 1) | 8 | |
| 298 | DZY Loves Strings | Codeforces | Codeforces Round #254 (Div. 1) | 8 | |
| 299 | Biathlon Track | Codeforces | Codeforces Round #242 (Div. 2) | 8 | |
| 300 | Mashmokh and Water Tanks | Codeforces | Codeforces Round #240 (Div. 1) | 8 | |
| 301 | Maze 1D | Codeforces | Codeforces Round #237 (Div. 2) | 8 | |
| 302 | Volcanoes | Codeforces | Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) | 8 | |
| 303 | Choosing Subtree is Fun | Codeforces | Codeforces Round #219 (Div. 1) | 8 | |
| 304 | Summer Earnings | Codeforces | Codeforces Round #194 (Div. 1) | 8 | |
| 305 | Sereja and Straight Lines | Codeforces | Codeforces Round #187 (Div. 1) | 8 | |
| 306 | Memory for Arrays | Codeforces | Croc Champ 2013 - Finals (online version, Div. 1) | 8 | |
| 307 | Morning run | Codeforces | Croc Champ 2013 - Finals (online version, Div. 1) | 8 | |
| 308 | Vanya and Balloons | Codeforces | Codeforces Round #355 (Div. 2) | 8 | |
| 309 | Michael and Charging Stations | Codeforces | Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) | 8 | |
| 310 | Animals and Puzzle | Codeforces | Codeforces Round #371 (Div. 1) | 8 | |
| 311 | Friends | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 9 | |
| 312 | Fence | Codeforces | Codeforces Round #144 (Div. 1) | 9 | |
| 313 | Cutting a Fence | Codeforces | VK Cup 2012 Finals (unofficial online-version) | 9 | |
| 314 | Thoroughly Bureaucratic Organization | Codeforces | Codeforces Round #127 (Div. 1) | 9 | |
| 315 | Tractor College | Codeforces | Codeforces Round #126 (Div. 2) | 9 | |
| 316 | Gripping Story | Codeforces | Codeforces Round #125 (Div. 1) | 9 | |
| 317 | Delivering Carcinogen | Codeforces | Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) | 9 | |
| 318 | Space Voyage | Codeforces | ABBYY Cup 2.0 - Easy | 9 | |
| 319 | Minimum Diameter | Codeforces | VK Cup 2012 Round 3 | 9 | |
| 320 | Buses and People | Codeforces | Codeforces Round #111 (Div. 2) | 9 | |
| 321 | Freezing with Style | Codeforces | Codeforces Round #107 (Div. 1) | 9 | |
| 322 | Lucky Segments | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) | 9 | |
| 323 | Help Greg the Dwarf | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 9 | |
| 324 | Winning Strategy | Codeforces | Yandex.Algorithm 2011 Finals | 9 | |
| 325 | Archer's Shot | Codeforces | Codeforces Beta Round #70 (Div. 2) | 9 | |
| 326 | Pasha and Pipe | Codeforces | Codeforces Round #293 (Div. 2) | 9 | |
| 327 | Mr. Kitayuta vs. Bamboos | Codeforces | Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) | 9 | |
| 328 | Chemistry Experiment | Codeforces | Codeforces Round #247 (Div. 2) | 9 | |
| 329 | Dividing Kingdom | Codeforces | Codeforces Round #158 (Div. 2) | 9 | |
| 330 | Optimal Point | Codeforces | Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) | 9 | |
| 331 | Karen and Cards | Codeforces | Codeforces Round #419 (Div. 1) | 9 | |
| 332 | Strange Radiation | Codeforces | Codeforces Round #425 (Div. 2) | 9 | |
| 333 | Road to Home | Codeforces | Codeforces Round #374 (Div. 2) | 9 | |
| 334 | Soap Time! - 2 | Codeforces | Codeforces Round #118 (Div. 1) | 10 | |
| 335 | Armistice Area Apportionment | Codeforces | CROC 2016 - Elimination Round | 10 | |
| 336 | Cross Sum | Codeforces | Codeforces Round #336 (Div. 1) | 10 | |
| 337 | BCPC | Codeforces | Codeforces Round #328 (Div. 2) | 10 | |
| 338 | Duff in Mafia | Codeforces | Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) | 10 | |
| 339 | Painting Edges | Codeforces | Codeforces Round #319 (Div. 1) | 10 | |
| 340 | Campus | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) | 10 | |
| 341 | Berland Miners | Codeforces | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) | 10 | |
| 342 | Misha and LCP on Tree | Codeforces | Codeforces Round #285 (Div. 1) | 10 | |
| 343 | Furukawa Nagisa's Tree | Codeforces | Codeforces Round #248 (Div. 1) | 10 | |
| 344 | Inna and Babies | Codeforces | Codeforces Round #220 (Div. 2) | 10 | |
| 345 | Looking for Owls | Codeforces | Codeforces Round #203 (Div. 2) | 10 | |
| 346 | Sheep | Codeforces | Croc Champ 2013 - Finals (online version, Div. 1) | 10 | |
| 347 | Forward, march! | Codeforces | Codeforces Beta Round #11 | 10 | |
| 348 | Karen and Neighborhood | Codeforces | Codeforces Round #419 (Div. 1) | 10 | |
| 349 | Mod Mod Mod | Codeforces | Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) | 10 | |
| 350 | Nikita and game | Codeforces | Codeforces Round #430 (Div. 2) | 10 |