| Problem Name | Online Judge | Contest | Difficulty Level | |
|---|---|---|---|---|
| 1 | Registration System | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 |
| 2 | Dijkstra? | Codeforces | Codeforces Alpha Round #20 (Codeforces format) | 1 |
| 3 | Lucky Sum of Digits | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 1 |
| 4 | Party | Codeforces | Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) | 1 |
| 5 | Ice Skating | Codeforces | Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) | 1 |
| 6 | Little Elephant and Bits | Codeforces | Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) | 1 |
| 7 | Little Girl and Maximum Sum | Codeforces | Codeforces Round #169 (Div. 2) | 1 |
| 8 | Learning Languages | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 1 |
| 9 | Building Permutation | Codeforces | Codeforces Round #175 (Div. 2) | 1 |
| 10 | Maze | Codeforces | Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) | 1 |
| 11 | Team | Codeforces | Codeforces Round #235 (Div. 2) | 1 |
| 12 | k-Tree | Codeforces | Codeforces Round #247 (Div. 2) | 1 |
| 13 | Boredom | Codeforces | Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) | 1 |
| 14 | Appleman and Toastman | Codeforces | Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) | 1 |
| 15 | Number of Ways | Codeforces | Codeforces Round #266 (Div. 2) | 1 |
| 16 | Table Decorations | Codeforces | Codeforces Round #273 (Div. 2) | 1 |
| 17 | Exams | Codeforces | Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) | 1 |
| 18 | Diverse Permutation | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 1 |
| 19 | Given Length and Sum of Digits... | Codeforces | Codeforces Round #277.5 (Div. 2) | 1 |
| 20 | Drazil and Factorial | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 1 |
| 21 | A and B and Team Training | Codeforces | Codeforces Round #294 (Div. 2) | 1 |
| 22 | Woodcutters | Codeforces | Codeforces Round #303 (Div. 2) | 1 |
| 23 | Soldier and Cards | Codeforces | Codeforces Round #304 (Div. 2) | 1 |
| 24 | Divisibility by Eight | Codeforces | Codeforces Round #306 (Div. 2) | 1 |
| 25 | Gerald's Hexagon | Codeforces | Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) | 1 |
| 26 | Bear and Poker | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 1 |
| 27 | Vasya and Petya's Game | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 1 |
| 28 | Kefa and Park | Codeforces | Codeforces Round #321 (Div. 2) | 1 |
| 29 | Watchmen | Codeforces | Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) | 1 |
| 30 | Tanya and Toys | Codeforces | Codeforces Round #346 (Div. 2) | 1 |
| 31 | NP-Hard Problem | Codeforces | Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) | 1 |
| 32 | Vacations | Codeforces | Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) | 1 |
| 33 | Sanatorium | Codeforces | Codeforces Round #377 (Div. 2) | 1 |
| 34 | Tetrahedron | Codeforces | Codeforces Round #113 (Div. 2) | 1 |
| 35 | Dishonest Sellers | Codeforces | Codeforces Round #402 (Div. 2) | 1 |
| 36 | Find Amir | Codeforces | Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2) | 1 |
| 37 | The Closest Pair Problem | UVA | 1 | |
| 38 | Classroom Watch | Codeforces | Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) | 1 |
| 39 | Cards | Codeforces | Codeforces Round #364 (Div. 2) | 1 |
| 40 | Alice, Bob and Chocolate | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 2 |
| 41 | Hexadecimal's Numbers | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 2 |
| 42 | The World is a Theatre | Codeforces | Codeforces Beta Round #95 (Div. 2) | 2 |
| 43 | Lucky Conversion | Codeforces | Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) | 2 |
| 44 | Pocket Book | Codeforces | Codeforces Round #108 (Div. 2) | 2 |
| 45 | Another Problem on Strings | Codeforces | Codeforces Round #112 (Div. 2) | 2 |
| 46 | Little Elephant and Problem | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 2 |
| 47 | LCM Challenge | Codeforces | Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) | 2 |
| 48 | Points on Line | Codeforces | Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) | 2 |
| 49 | Escape from Stones | Codeforces | Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) | 2 |
| 50 | Beautiful Sets of Points | Codeforces | Codeforces Round #164 (Div. 2) | 2 |
| 51 | k-Multiple Free Set | Codeforces | Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) | 2 |
| 52 | Polo the Penguin and Strings | Codeforces | Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) | 2 |
| 53 | Greg and Array | Codeforces | Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) | 2 |
| 54 | Rational Resistance | Codeforces | Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) | 2 |
| 55 | Alice and Bob | Codeforces | Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) | 2 |
| 56 | Mafia | Codeforces | Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) | 2 |
| 57 | Knight Tournament | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 2 |
| 58 | Fixing Typos | Codeforces | Codeforces Round #211 (Div. 2) | 2 |
| 59 | Hamburgers | Codeforces | Codeforces Round #218 (Div. 2) | 2 |
| 60 | Counting Kangaroos is Fun | Codeforces | Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) | 2 |
| 61 | Fox and Box Accumulation | Codeforces | Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) | 2 |
| 62 | Mashmokh and Numbers | Codeforces | Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) | 2 |
| 63 | Checkposts | Codeforces | Codeforces Round #244 (Div. 2) | 2 |
| 64 | Xor-tree | Codeforces | Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) | 2 |
| 65 | The Child and Toy | Codeforces | Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) | 2 |
| 66 | Valera and Tubes | Codeforces | Codeforces Round #252 (Div. 2) | 2 |
| 67 | DZY Loves Sequences | Codeforces | Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) | 2 |
| 68 | Little Pony and Expected Maximum | Codeforces | Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) | 2 |
| 69 | George and Job | Codeforces | Codeforces Round #267 (Div. 2) | 2 |
| 70 | 24 Game | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 2 |
| 71 | Design Tutorial: Make It Nondeterministic | Codeforces | Codeforces Round #270 | 2 |
| 72 | Bits | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 2 |
| 73 | Palindrome Transformation | Codeforces | Codeforces Round #277 (Div. 2) | 2 |
| 74 | Hacking Cypher | Codeforces | Codeforces Round #279 (Div. 2) | 2 |
| 75 | Vanya and Exams | Codeforces | Codeforces Round #280 (Div. 2) | 2 |
| 76 | Removing Columns | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 2 |
| 77 | Crazy Town | Codeforces | Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) | 2 |
| 78 | Fox And Names | Codeforces | Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) | 2 |
| 79 | Anya and Smartphone | Codeforces | Codeforces Round #293 (Div. 2) | 2 |
| 80 | Tourist's Notes | Codeforces | Codeforces Round #300 | 2 |
| 81 | Kyoya and Colored Balls | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 2 |
| 82 | Case of Matryoshkas | Codeforces | Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) | 2 |
| 83 | Geometric Progression | Codeforces | Codeforces Round #Pi (Div. 2) | 2 |
| 84 | Replacement | Codeforces | Codeforces Round #316 (Div. 2) | 2 |
| 85 | Developing Skills | Codeforces | Codeforces Round #322 (Div. 2) | 2 |
| 86 | GCD Table | Codeforces | Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) | 2 |
| 87 | Duff and Weight Lifting | Codeforces | Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) | 2 |
| 88 | The Two Routes | Codeforces | Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) | 2 |
| 89 | Alternative Thinking | Codeforces | Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) | 2 |
| 90 | Sorting Railway Cars | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 2 |
| 91 | Chain Reaction | Codeforces | Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) | 2 |
| 92 | K-special Tables | Codeforces | Codeforces Round #342 (Div. 2) | 2 |
| 93 | Cinema | Codeforces | Codeforces Round #350 (Div. 2) | 2 |
| 94 | Vasya and String | Codeforces | Codeforces Round #354 (Div. 2) | 2 |
| 95 | Bear and Prime 100 | Codeforces | Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) | 2 |
| 96 | They Are Everywhere | Codeforces | Codeforces Round #364 (Div. 2) | 2 |
| 97 | Thor | Codeforces | Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) | 2 |
| 98 | Hard problem | Codeforces | Codeforces Round #367 (Div. 2) | 2 |
| 99 | Pythagorean Triples | Codeforces | Codeforces Round #368 (Div. 2) | 2 |
| 100 | Sonya and Queries | Codeforces | Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) | 2 |
| 101 | Plus and Square Root | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 2 |
| 102 | Alyona and mex | Codeforces | Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) | 2 |
| 103 | Tennis Championship | Codeforces | Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) | 2 |
| 104 | Vladik and fractions | Codeforces | Codeforces Round #384 (Div. 2) | 2 |
| 105 | PolandBall and Forest | Codeforces | 8VC Venture Cup 2017 - Elimination Round | 2 |
| 106 | Timofey and a tree | Codeforces | Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) | 2 |
| 107 | Table Tennis Game 2 | Codeforces | Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) | 2 |
| 108 | Andryusha and Colored Balloons | Codeforces | ?????????? 2017 - ????? (?????? ??? ??????-??????????) | 2 |
| 109 | Anton and Fairy Tale | Codeforces | Codeforces Round #404 (Div. 2) | 2 |
| 110 | Bear and Different Names | Codeforces | VK Cup 2017 - Round 1 | 2 |
| 111 | Functions again | Codeforces | Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) | 2 |
| 112 | Sagheer and Nubian Market | Codeforces | Codeforces Round #417 (Div. 2) | 2 |
| 113 | Leha and Function | Codeforces | Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) | 2 |
| 114 | Journey | Codeforces | Codeforces Round #428 (Div. 2) | 2 |
| 115 | Bear and Forgotten Tree 3 | Codeforces | VK Cup 2016 - Round 1 | 2 |
| 116 | Bus | Codeforces | Codeforces Round #436 (Div. 2) | 2 |
| 117 | Maximum splitting | Codeforces | Technocup 2018 - Elimination Round 2 | 2 |
| 118 | Rumor | Codeforces | Educational Codeforces Round 33 (Rated for Div. 2) | 2 |
| 119 | Seat Arrangements | Codeforces | Codeforces Round #460 (Div. 2) | 2 |
| 120 | Tic-tac-toe | Codeforces | Codeforces Beta Round #3 | 3 |
| 121 | Longest Regular Bracket Sequence | Codeforces | Codeforces Beta Round #5 | 3 |
| 122 | Stripe | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 3 |
| 123 | Modified GCD | Codeforces | Codeforces Beta Round #67 (Div. 2) | 3 |
| 124 | Cthulhu | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 3 |
| 125 | Petya and Inequiations | Codeforces | Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) | 3 |
| 126 | Lucky Sum | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) | 3 |
| 127 | Replacement | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 3 |
| 128 | History | Codeforces | Codeforces Beta Round #98 (Div. 2) | 3 |
| 129 | Win or Freeze | Codeforces | Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2) | 3 |
| 130 | Median | Codeforces | Codeforces Round #113 (Div. 2) | 3 |
| 131 | Plant | Codeforces | Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) | 3 |
| 132 | Lexicographically Maximum Subsequence | Codeforces | Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2) | 3 |
| 133 | Photographer | Codeforces | Codeforces Round #128 (Div. 2) | 3 |
| 134 | Little Elephant and Interval | Codeforces | Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) | 3 |
| 135 | Color Stripe | Codeforces | Codeforces Round #135 (Div. 2) | 3 |
| 136 | Barcode | Codeforces | Codeforces Round #139 (Div. 2) | 3 |
| 137 | To Add or Not to Add | Codeforces | Codeforces Round #143 (Div. 2) | 3 |
| 138 | Primes on Interval | Codeforces | Codeforces Round #147 (Div. 2) | 3 |
| 139 | Maxim and Discounts | Codeforces | Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) | 3 |
| 140 | Dima and Staircase | Codeforces | Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) | 3 |
| 141 | Ladder | Codeforces | Codeforces Round #171 (Div. 2) | 3 |
| 142 | XOR and OR | Codeforces | Codeforces Round #173 (Div. 2) | 3 |
| 143 | Cows and Sequence | Codeforces | Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) | 3 |
| 144 | Lucky Permutation Triple | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 3 |
| 145 | Ilya and Matrix | Codeforces | Codeforces Round #186 (Div. 2) | 3 |
| 146 | Perfect Pair | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 3 |
| 147 | Purification | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 3 |
| 148 | Secrets | Codeforces | Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) | 3 |
| 149 | Quiz | Codeforces | Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) | 3 |
| 150 | Xenia and Weights | Codeforces | Codeforces Round #197 (Div. 2) | 3 |
| 151 | Bombs | Codeforces | Codeforces Round #203 (Div. 2) | 3 |
| 152 | Vasya and Robot | Codeforces | Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) | 3 |
| 153 | Sereja and Algorithm | Codeforces | Codeforces Round #215 (Div. 1) | 3 |
| 154 | Valera and Elections | Codeforces | Codeforces Round #216 (Div. 2) | 3 |
| 155 | Arithmetic Progression | Codeforces | Codeforces Round #224 (Div. 2) | 3 |
| 156 | Milking cows | Codeforces | Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) | 3 |
| 157 | Bear and Prime Numbers | Codeforces | Codeforces Round #226 (Div. 2) | 3 |
| 158 | Searching for Graph | Codeforces | Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) | 3 |
| 159 | Unusual Product | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 3 |
| 160 | Triangle | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 3 |
| 161 | Booking System | Codeforces | Codeforces Round #241 (Div. 2) | 3 |
| 162 | Painting Fence | Codeforces | Codeforces Round #256 (Div. 2) | 3 |
| 163 | Jzzhu and Chocolate | Codeforces | Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) | 3 |
| 164 | Pashmak and Buses | Codeforces | Codeforces Round #261 (Div. 2) | 3 |
| 165 | Present | Codeforces | Codeforces Round #262 (Div. 2) | 3 |
| 166 | Gargari and Bishops | Codeforces | Codeforces Round #264 (Div. 2) | 3 |
| 167 | No to Palindromes! | Codeforces | Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) | 3 |
| 168 | Dreamoon and Sums | Codeforces | Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) | 3 |
| 169 | Vasya and Basketball | Codeforces | Codeforces Round #281 (Div. 2) | 3 |
| 170 | Treasure | Codeforces | Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) | 3 |
| 171 | Misha and Forest | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 3 |
| 172 | Mr. Kitayuta, the Treasure Hunter | Codeforces | Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) | 3 |
| 173 | Guess Your Way Out! | Codeforces | Codeforces Round #287 (Div. 2) | 3 |
| 174 | Anya and Ghosts | Codeforces | Codeforces Round #288 (Div. 2) | 3 |
| 175 | Watto and Mechanism | Codeforces | Codeforces Round #291 (Div. 2) | 3 |
| 176 | DNA Alignment | Codeforces | Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) | 3 |
| 177 | Glass Carving | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 3 |
| 178 | Ilya and Sticks | Codeforces | Codeforces Round #297 (Div. 2) | 3 |
| 179 | Polycarpus' Dice | Codeforces | Codeforces Round #298 (Div. 2) | 3 |
| 180 | Ice Cave | Codeforces | Codeforces Round #301 (Div. 2) | 3 |
| 181 | Writing Code | Codeforces | Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) | 3 |
| 182 | Vanya and Scales | Codeforces | Codeforces Round #308 (Div. 2) | 3 |
| 183 | Primes or Palindromes? | Codeforces | Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) | 3 |
| 184 | A Problem about Polyline | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 |
| 185 | Marina and Vasya | Codeforces | Codeforces Round #324 (Div. 2) | 3 |
| 186 | Gennady the Dentist | Codeforces | Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) | 3 |
| 187 | Median Smoothing | Codeforces | Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) | 3 |
| 188 | Day at the Beach | Codeforces | Codeforces Round #332 (Div. 2) | 3 |
| 189 | Watering Flowers | Codeforces | Codeforces Round #340 (Div. 2) | 3 |
| 190 | Wet Shark and Flowers | Codeforces | Codeforces Round #341 (Div. 2) | 3 |
| 191 | Little Artem and Matrix | Codeforces | VK Cup 2016 - Round 2 | 3 |
| 192 | Bear and Colors | Codeforces | VK Cup 2016 - Round 3 | 3 |
| 193 | Recycling Bottles | Codeforces | Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) | 3 |
| 194 | Vanya and Label | Codeforces | Codeforces Round #355 (Div. 2) | 3 |
| 195 | Heap Operations | Codeforces | Codeforces Round #357 (Div. 2) | 3 |
| 196 | Alyona and the Tree | Codeforces | Codeforces Round #358 (Div. 2) | 3 |
| 197 | Robbers' watch | Codeforces | Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) | 3 |
| 198 | Lorenzo Von Matterhorn | Codeforces | Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) | 3 |
| 199 | Coloring Trees | Codeforces | Codeforces Round #369 (Div. 2) | 3 |
| 200 | Joty and Chocolate | Codeforces | Educational Codeforces Round 13 | 3 |
| 201 | Memory and De-Evolution | Codeforces | Codeforces Round #370 (Div. 2) | 3 |
| 202 | Efim and Strange Grade | Codeforces | Codeforces Round #373 (Div. 1) & Codeforces Round #373 (Div. 2) | 3 |
| 203 | Journey | Codeforces | Codeforces Round #374 (Div. 2) | 3 |
| 204 | Polycarp at the Radio | Codeforces | Codeforces Round #375 (Div. 2) | 3 |
| 205 | Socks | Codeforces | Codeforces Round #376 (Div. 2) | 3 |
| 206 | Anton and Making Potions | Codeforces | Codeforces Round #379 (Div. 2) | 3 |
| 207 | Arpa's loud Owf and Mehrdad's evil plan | Codeforces | Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) | 3 |
| 208 | Voting | Codeforces | Codeforces Round #388 (Div. 2) | 3 |
| 209 | Servers | Codeforces | Codeforces Round #387 (Div. 2) | 3 |
| 210 | Hongcow Builds A Nation | Codeforces | Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) | 3 |
| 211 | Santa Claus and Robot | Codeforces | Technocup 2017 - Elimination Round 3 | 3 |
| 212 | Dasha and Password | Codeforces | Codeforces Round #394 (Div. 2) | 3 |
| 213 | Mahmoud and a Message | Codeforces | Codeforces Round #396 (Div. 2) | 3 |
| 214 | Molly's Chemicals | Codeforces | ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined) | 3 |
| 215 | Alyona and Spreadsheet | Codeforces | Codeforces Round #401 (Div. 2) | 3 |
| 216 | Do you want a date? | Codeforces | Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) | 3 |
| 217 | Success Rate | Codeforces | VK Cup 2017 - Round 3 | 3 |
| 218 | Mike and gcd problem | Codeforces | Codeforces Round #410 (Div. 2) | 3 |
| 219 | Voltage Keepsake | Codeforces | VK Cup 2017 - Round 2 | 3 |
| 220 | Karen and Game | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 3 |
| 221 | Star sky | Codeforces | Codeforces Round #427 (Div. 2) | 3 |
| 222 | The Meaningless Game | Codeforces | Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) | 3 |
| 223 | Hacker, pack your bags! | Codeforces | Codeforces Round #422 (Div. 2) | 3 |
| 224 | Okabe and Boxes | Codeforces | Codeforces Round #420 (Div. 2) | 3 |
| 225 | An impassioned circulation of affection | Codeforces | Codeforces Round #418 (Div. 2) | 3 |
| 226 | Sorting by Subsequences | Codeforces | AIM Tech Round 4 (Div. 1) & AIM Tech Round 4 (Div. 2) | 3 |
| 227 | Two TVs | Codeforces | Educational Codeforces Round 27 | 3 |
| 228 | Phone Numbers | Codeforces | Codeforces Round #451 (Div. 2) | 3 |
| 229 | Hashing Trees | Codeforces | Codeforces Round #453 (Div. 1) & Codeforces Round #453 (Div. 2) | 3 |
| 230 | Party Lemonade | Codeforces | Hello 2018 | 3 |
| 231 | Jamie and Interesting Graph | Codeforces | Codeforces Round #457 (Div. 2) | 3 |
| 232 | Swap Adjacent Elements | Codeforces | Educational Codeforces Round 37 (Rated for Div. 2) | 3 |
| 233 | Cave Painting | Codeforces | Codeforces Round #461 (Div. 2) | 3 |
| 234 | Convenient For Everybody | Codeforces | Codeforces Round #464 (Div. 2) | 3 |
| 235 | Fifa and Fafa | Codeforces | Codeforces Round #465 (Div. 2) | 3 |
| 236 | K-Multiple Free set | UVA | 3 | |
| 237 | Ancient Berland Circus | Codeforces | Codeforces Beta Round #1 | 4 |
| 238 | Fruits | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 4 |
| 239 | Roads in Berland | Codeforces | Codeforces Beta Round #25 (Div. 2 Only) | 4 |
| 240 | Page Numbers | Codeforces | Codeforces Beta Round #34 (Div. 2) | 4 |
| 241 | Fire Again | Codeforces | Codeforces Beta Round #35 (Div. 2) | 4 |
| 242 | Lucky Tickets | Codeforces | Codeforces Beta Round #42 (Div. 2) | 4 |
| 243 | Little Frog | Codeforces | Codeforces Beta Round #49 (Div. 2) | 4 |
| 244 | Round Table Knights | Codeforces | Codeforces Beta Round #65 (Div. 2) | 4 |
| 245 | Trains | Codeforces | Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) | 4 |
| 246 | Homework | Codeforces | Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) | 4 |
| 247 | Buns | Codeforces | Codeforces Beta Round #82 (Div. 2) | 4 |
| 248 | Dorm Water Supply | Codeforces | Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) | 4 |
| 249 | Statues | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) | 4 |
| 250 | Turing Tape | Codeforces | Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) | 4 |
| 251 | New Year Snowmen | Codeforces | Codeforces Round #100 | 4 |
| 252 | Anagram Search | Codeforces | Codeforces Round #103 (Div. 2) | 4 |
| 253 | Division into Teams | Codeforces | Codeforces Round #106 (Div. 2) | 4 |
| 254 | Hometask | Codeforces | Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) | 4 |
| 255 | Message | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 4 |
| 256 | Find Pair | Codeforces | Codeforces Round #111 (Div. 2) | 4 |
| 257 | Letter | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 4 |
| 258 | About Bacteria | Codeforces | Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) | 4 |
| 259 | Flying Saucer Segments | Codeforces | Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) | 4 |
| 260 | Shifts | Codeforces | Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) | 4 |
| 261 | Weather | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) | 4 |
| 262 | King's Path | Codeforces | Codeforces Round #149 (Div. 2) | 4 |
| 263 | Almost Arithmetical Progression | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 4 |
| 264 | View Angle | Codeforces | Codeforces Round #159 (Div. 2) | 4 |
| 265 | The Brand New Function | Codeforces | Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) | 4 |
| 266 | Magical Boxes | Codeforces | Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) | 4 |
| 267 | Secret | Codeforces | Codeforces Round #166 (Div. 2) | 4 |
| 268 | Lucky Permutation | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 4 |
| 269 | Parity Game | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 |
| 270 | Beautiful Numbers | Codeforces | Codeforces Round #181 (Div. 2) | 4 |
| 271 | Yaroslav and Sequence | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 4 |
| 272 | The Closest Pair | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 4 |
| 273 | Ciel and Robot | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 4 |
| 274 | Magic Five | Codeforces | Codeforces Round #191 (Div. 2) | 4 |
| 275 | Tourist Problem | Codeforces | Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) | 4 |
| 276 | Jeff and Rounding | Codeforces | Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) | 4 |
| 277 | Find Maximum | Codeforces | Codeforces Round #205 (Div. 2) | 4 |
| 278 | Matrix | Codeforces | Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) | 4 |
| 279 | Dima and Salad | Codeforces | Codeforces Round #214 (Div. 2) | 4 |
| 280 | Divisible by Seven | Codeforces | Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) | 4 |
| 281 | Sereja and Prefixes | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 4 |
| 282 | Inna and Huge Candy Matrix | Codeforces | Codeforces Round #234 (Div. 2) | 4 |
| 283 | Restore Graph | Codeforces | Codeforces Round #237 (Div. 2) | 4 |
| 284 | Magic Formulas | Codeforces | Codeforces Round #242 (Div. 2) | 4 |
| 285 | Sereja and Swaps | Codeforces | Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) | 4 |
| 286 | Cardiogram | Codeforces | Codeforces Round #249 (Div. 2) | 4 |
| 287 | Devu and Partitioning of the Array | Codeforces | Codeforces Round #251 (Div. 2) | 4 |
| 288 | DZY Loves Physics | Codeforces | Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2) | 4 |
| 289 | Predict Outcome of the Game | Codeforces | Codeforces Round #258 (Div. 2) | 4 |
| 290 | MUH and House of Cards | Codeforces | Codeforces Round #269 (Div. 2) | 4 |
| 291 | Captain Marmot | Codeforces | Codeforces Round #271 (Div. 2) | 4 |
| 292 | Fight the Monster | Codeforces | Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) | 4 |
| 293 | Tavas and Karafs | Codeforces | Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1) | 4 |
| 294 | GukiZ hates Boxes | Codeforces | Codeforces Round #307 (Div. 2) | 4 |
| 295 | Arthur and Table | Codeforces | Codeforces Round #311 (Div. 2) | 4 |
| 296 | Amr and Chemistry | Codeforces | Codeforces Round #312 (Div. 2) | 4 |
| 297 | The Big Race | Codeforces | Codeforces Round #328 (Div. 2) | 4 |
| 298 | Harmony Analysis | Codeforces | Codeforces Round #337 (Div. 2) | 4 |
| 299 | Peter and Snow Blower | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 4 |
| 300 | Report | Codeforces | Codeforces Round #344 (Div. 2) | 4 |
| 301 | Reberland Linguistics | Codeforces | Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) | 4 |
| 302 | Money Transfers | Codeforces | Codeforces Round #353 (Div. 2) | 4 |
| 303 | Mike and Chocolate Thieves | Codeforces | Codeforces Round #361 (Div. 2) | 4 |
| 304 | Epidemic in Monstropolis | Codeforces | Codeforces Round #378 (Div. 2) | 4 |
| 305 | Road to Cinema | Codeforces | Technocup 2017 - Elimination Round 2 | 4 |
| 306 | Tram | Codeforces | Codeforces Round #386 (Div. 2) | 4 |
| 307 | Unfair Poll | Codeforces | Codeforces Round #392 (Div. 2) | 4 |
| 308 | Pavel and barbecue | Codeforces | 8VC Venture Cup 2017 - Final Round | 4 |
| 309 | Garland | Codeforces | Codeforces Round #398 (Div. 2) | 4 |
| 310 | Jon Snow and his Favourite Number | Codeforces | Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) | 4 |
| 311 | Vladik and Memorable Trip | Codeforces | Codeforces Round #416 (Div. 2) | 4 |
| 312 | Naming Company | Codeforces | Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2) | 4 |
| 313 | Fountains | Codeforces | Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2) | 4 |
| 314 | Jury Marks | Codeforces | Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) | 4 |
| 315 | String Reconstruction | Codeforces | Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals) | 4 |
| 316 | Queue | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) | 4 |
| 317 | The Intriguing Obsession | Codeforces | Codeforces Round #439 (Div. 2) | 4 |
| 318 | Qualification Rounds | Codeforces | Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) | 4 |
| 319 | Travelling Salesman and Special Numbers | Codeforces | Codecraft-18 and Codeforces Round #458 (Div. 1 + Div. 2, combined) | 4 |
| 320 | Line | Codeforces | Codeforces Beta Round #7 | 5 |
| 321 | Sequence | Codeforces | Codeforces Beta Round #13 | 5 |
| 322 | Four Segments | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 |
| 323 | Monitor | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 5 |
| 324 | Unordered Subsequence | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 5 |
| 325 | Mail Stamps | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 5 |
| 326 | Email address | Codeforces | Codeforces Beta Round #40 (Div. 2) | 5 |
| 327 | Newspaper Headline | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) | 5 |
| 328 | Frames | Codeforces | Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) | 5 |
| 329 | Grammar Lessons | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) | 5 |
| 330 | Cycle | Codeforces | Codeforces Beta Round #88 | 5 |
| 331 | Fancy Number | Codeforces | Codeforces Beta Round #89 (Div. 2) | 5 |
| 332 | Prime Permutation | Codeforces | Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) | 5 |
| 333 | Literature Lesson | Codeforces | Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) | 5 |
| 334 | Queue | Codeforces | Codeforces Round #101 (Div. 2) | 5 |
| 335 | Help Farmer | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 |
| 336 | Terse princess | Codeforces | Codeforces Round #105 (Div. 2) | 5 |
| 337 | Wizards and Trolleybuses | Codeforces | Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) | 5 |
| 338 | Permutations | Codeforces | Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) | 5 |
| 339 | STL | Codeforces | Codeforces Round #120 (Div. 2) | 5 |
| 340 | Dynasty Puzzles | Codeforces | Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) | 5 |
| 341 | Cutting Figure | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 5 |
| 342 | Clear Symmetry | Codeforces | Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) | 5 |
| 343 | Bracket Sequence | Codeforces | Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) | 5 |
| 344 | Cycles | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 5 |
| 345 | Not Wool Sequences | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 5 |
| 346 | Beauty Pageant | Codeforces | Codeforces Round #151 (Div. 2) | 5 |
| 347 | Text Editor | Codeforces | Codeforces Round #154 (Div. 2) | 5 |
| 348 | Balls and Boxes | Codeforces | Codeforces Round #158 (Div. 2) | 5 |
| 349 | Shaass and Lights | Codeforces | Codeforces Round #178 (Div. 2) | 5 |
| 350 | Ivan and Powers of Two | Codeforces | Codeforces Round #184 (Div. 2) | 5 |
| 351 | Sereja and Contest | Codeforces | Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) | 5 |
| 352 | Malek Dance Club | Codeforces | Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) | 5 |
| 353 | Vasily the Bear and Sequence | Codeforces | Codeforces Round #195 (Div. 2) | 5 |
| 354 | Cupboard and Balloons | Codeforces | Codeforces Round #199 (Div. 2) | 5 |
| 355 | Prime Number | Codeforces | Codeforces Round #209 (Div. 2) | 5 |
| 356 | Levko and Array Recovery | Codeforces | Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) | 5 |
| 357 | Inna and Dima | Codeforces | Codeforces Round #220 (Div. 2) | 5 |
| 358 | George and Number | Codeforces | Codeforces Round #227 (Div. 2) | 5 |
| 359 | Prime Swaps | Codeforces | Codeforces Round #246 (Div. 2) | 5 |
| 360 | Ryouko's Memory Note | Codeforces | Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) | 5 |
| 361 | Borya and Hanabi | Codeforces | Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) | 5 |
| 362 | Sums of Digits | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 5 |
| 363 | Mike and Frog | Codeforces | Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) | 5 |
| 364 | Lengthening Sticks | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 5 |
| 365 | Wilbur and Points | Codeforces | Codeforces Round #331 (Div. 2) | 5 |
| 366 | Running Track | Codeforces | Codeforces Round #338 (Div. 2) | 5 |
| 367 | Famil Door and Brackets | Codeforces | Codeforces Round #343 (Div. 2) | 5 |
| 368 | Felicity is Coming! | Codeforces | Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) | 5 |
| 369 | Two strings | Codeforces | Educational Codeforces Round 17 | 5 |
| 370 | Berzerk | Codeforces | Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) | 5 |
| 371 | Bank Hacking | Codeforces | Codeforces Round #408 (Div. 2) | 5 |
| 372 | Strange Game On Matrix | Codeforces | Educational Codeforces Round 30 | 5 |
| 373 | Looking for Order | Codeforces | Codeforces Beta Round #8 | 6 |
| 374 | Industrial Nim | Codeforces | Codeforces Beta Round #15 | 6 |
| 375 | Stripe 2 | Codeforces | Codeforces Alpha Round #21 (Codeforces format) | 6 |
| 376 | System Administrator | Codeforces | Codeforces Beta Round #22 (Div. 2 Only) | 6 |
| 377 | Shooting Gallery | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 6 |
| 378 | Schedule | Codeforces | Codeforces Beta Round #31 (Div. 2, Codeforces format) | 6 |
| 379 | Flea | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 6 |
| 380 | Wonderful Randomized Sum | Codeforces | Codeforces Beta Round #33 (Codeforces format) | 6 |
| 381 | Blinds | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 6 |
| 382 | Hamsters and Tigers | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 6 |
| 383 | Array | Codeforces | Codeforces Beta Round #53 | 6 |
| 384 | Trees | Codeforces | Codeforces Beta Round #54 (Div. 2) | 6 |
| 385 | Title | Codeforces | Codeforces Beta Round #55 (Div. 2) | 6 |
| 386 | Bulls and Cows | Codeforces | Codeforces Beta Round #59 (Div. 2) | 6 |
| 387 | Heroes | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) | 6 |
| 388 | Beaver Game | Codeforces | Codeforces Beta Round #70 (Div. 2) | 6 |
| 389 | Beaver | Codeforces | Codeforces Beta Round #71 | 6 |
| 390 | Robbery | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) | 6 |
| 391 | Hockey | Codeforces | Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) | 6 |
| 392 | Hot Bath | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 6 |
| 393 | Police Station | Codeforces | Codeforces Round #130 (Div. 2) | 6 |
| 394 | Game | Codeforces | Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) | 6 |
| 395 | Hiring Staff | Codeforces | Codeforces Round #133 (Div. 2) | 6 |
| 396 | Reducing Fractions | Codeforces | Codeforces Round #137 (Div. 2) | 6 |
| 397 | Anagram | Codeforces | Codeforces Round #155 (Div. 2) | 6 |
| 398 | Below the Diagonal | Codeforces | Codeforces Round #163 (Div. 2) | 6 |
| 399 | Rectangle Puzzle | Codeforces | Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) | 6 |
| 400 | Dima and Containers | Codeforces | Codeforces Round #208 (Div. 2) | 6 |
| 401 | Insertion Sort | Codeforces | Codeforces Round #212 (Div. 2) | 6 |
| 402 | Mittens | Codeforces | Codeforces Round #217 (Div. 2) | 6 |
| 403 | Warrior and Archer | Codeforces | Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) | 6 |
| 404 | International Olympiad | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 6 |
| 405 | Chris and Road | Codeforces | Codeforces Round #365 (Div. 2) | 6 |
| 406 | Commentator problem | Codeforces | Codeforces Beta Round #2 | 7 |
| 407 | Digital Root | Codeforces | Codeforces Beta Round #10 | 7 |
| 408 | Sequence of points | Codeforces | Codeforces Beta Round #24 | 7 |
| 409 | Old Berland Language | Codeforces | Codeforces Beta Round #37 | 7 |
| 410 | Disposition | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 |
| 411 | Three Base Stations | Codeforces | Codeforces Beta Round #48 | 7 |
| 412 | First Digit Law | Codeforces | Codeforces Beta Round #50 | 7 |
| 413 | Pie or die | Codeforces | Codeforces Beta Round #51 | 7 |
| 414 | Corporation Mail | Codeforces | Codeforces Beta Round #52 (Div. 2) | 7 |
| 415 | Harry Potter and the Golden Snitch | Codeforces | Codeforces Beta Round #60 | 7 |
| 416 | Petya and File System | Codeforces | Codeforces Beta Round #61 (Div. 2) | 7 |
| 417 | LionAge II | Codeforces | Codeforces Beta Round #66 | 7 |
| 418 | Chessboard Billiard | Codeforces | Codeforces Beta Round #68 | 7 |
| 419 | Biathlon | Codeforces | Codeforces Beta Round #72 (Div. 2 Only) | 7 |
| 420 | Help Victoria the Wise | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 7 |
| 421 | Education Reform | Codeforces | Codeforces Beta Round #90 | 7 |
| 422 | Geometry Horse | Codeforces | Codeforces Round #115 | 7 |
| 423 | Try and Catch | Codeforces | Codeforces Round #123 (Div. 2) | 7 |
| 424 | Football Championship | Codeforces | Codeforces Round #126 (Div. 2) | 7 |
| 425 | Robo-Footballer | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 7 |
| 426 | Circle of Numbers | Codeforces | Codeforces Round #161 (Div. 2) | 7 |
| 427 | Students' Revenge | Codeforces | Codeforces Round #193 (Div. 2) | 7 |
| 428 | Blocked Points | Codeforces | Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) | 7 |
| 429 | On Number of Decompositions into Multipliers | Codeforces | Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2) | 7 |
| 430 | Cards | Codeforces | Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) | 7 |
| 431 | Vladik and chat | Codeforces | Codeforces Round #390 (Div. 2) | 7 |
| 432 | How Many Squares? | Codeforces | Codeforces Beta Round #11 | 8 |
| 433 | Balance | Codeforces | Codeforces Beta Round #17 | 8 |
| 434 | Deletion of Repeats | Codeforces | Codeforces Beta Round #19 | 8 |
| 435 | Oranges and Apples | Codeforces | Codeforces Beta Round #23 | 8 |
| 436 | Parquet | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 8 |
| 437 | Bath Queue | Codeforces | Codeforces Beta Round #28 (Codeforces format) | 8 |
| 438 | Safe cracking | Codeforces | Codeforces Beta Round #41 | 8 |
| 439 | Crossword | Codeforces | Codeforces Beta Round #44 (Div. 2) | 8 |
| 440 | The Race | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 8 |
| 441 | Happy Farm 5 | Codeforces | Codeforces Beta Round #47 | 8 |
| 442 | Mushroom Strife | Codeforces | Codeforces Beta Round #56 | 8 |
| 443 | Capture Valerian | Codeforces | Codeforces Beta Round #57 (Div. 2) | 8 |
| 444 | Game | Codeforces | Codeforces Beta Round #63 (Div. 2) | 8 |
| 445 | Lucky Tickets | Codeforces | Codeforces Beta Round #64 | 8 |
| 446 | Optimal Sum | Codeforces | Codeforces Round #117 (Div. 2) | 8 |
| 447 | Crosses | Codeforces | Codeforces Round #132 (Div. 2) | 8 |
| 448 | Fractal Detector | Codeforces | Codeforces Round #141 (Div. 2) | 8 |
| 449 | Inna and Candy Boxes | Codeforces | Codeforces Round #229 (Div. 2) | 8 |
| 450 | Dominoes | Codeforces | Codeforces Round #231 (Div. 2) | 8 |
| 451 | Bowls | Codeforces | Codeforces Beta Round #36 | 9 |
| 452 | Berland Square | Codeforces | Codeforces Beta Round #39 | 9 |
| 453 | Inquisition | Codeforces | Codeforces Beta Round #58 | 9 |
| 454 | Synchrophasotron | Codeforces | Codeforces Beta Round #62 | 9 |
| 455 | Item World | Codeforces | Codeforces Beta Round #81 | 9 |
| 456 | Beautiful Function | Codeforces | Codeforces Round #329 (Div. 2) | 9 |
| 457 | Fire in the City | Codeforces | Educational Codeforces Round 27 | 9 |
| 458 | Strange Radiation | Codeforces | Codeforces Round #425 (Div. 2) | 9 |
| 459 | Mister B and Boring Game | Codeforces | Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) | 9 |
| 460 | Maze 2D | Codeforces | Coder-Strike 2014 - Round 2 | 9 |