| Problem Name | Online Judge | Contest | Difficulty Level | |
|---|---|---|---|---|
| 1 | Hexadecimal's theorem | Codeforces | Codeforces Round #125 (Div. 2) | 1 |
| 2 | Insomnia cure | Codeforces | Codeforces Round #105 (Div. 2) | 1 |
| 3 | Present from Lena | Codeforces | Codeforces Beta Round #89 (Div. 2) | 1 |
| 4 | Lucky Sum of Digits | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 1 |
| 5 | Before an Exam | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 1 |
| 6 | Far Relative’s Birthday Cake | Codeforces | Codeforces Round #343 (Div. 2) | 1 |
| 7 | Simple Game | Codeforces | Codeforces Round #316 (Div. 2) | 1 |
| 8 | Quasi Binary | Codeforces | Codeforces Round #300 | 1 |
| 9 | Exam | Codeforces | Codeforces Round #298 (Div. 2) | 1 |
| 10 | Game | Codeforces | Rockethon 2015 | 1 |
| 11 | Diverse Permutation | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 1 |
| 12 | Random Teams | Codeforces | Codeforces Round #273 (Div. 2) | 1 |
| 13 | Fedor and New Game | Codeforces | Codeforces Round #267 (Div. 2) | 1 |
| 14 | Anton and Letters | Codeforces | Codeforces Round #253 (Div. 2) | 1 |
| 15 | Team | Codeforces | Codeforces Round #235 (Div. 2) | 1 |
| 16 | Road Construction | Codeforces | Codeforces Round #192 (Div. 2) | 1 |
| 17 | Array | Codeforces | Codeforces Round #181 (Div. 2) | 1 |
| 18 | Queue at the School | Codeforces | Codeforces Round #163 (Div. 2) | 1 |
| 19 | Different is Good | Codeforces | Codeforces Round #352 (Div. 2) | 1 |
| 20 | Free Ice Cream | Codeforces | Codeforces Round #359 (Div. 2) | 1 |
| 21 | Bear and Five Cards | Codeforces | Codeforces Round #356 (Div. 2) | 1 |
| 22 | Bear and Finding Criminals | Codeforces | Codeforces Round #356 (Div. 2) | 1 |
| 23 | Alyona and Numbers | Codeforces | Codeforces Round #358 (Div. 2) | 1 |
| 24 | Lovely Palindromes | Codeforces | Codeforces Round #360 (Div. 2) | 1 |
| 25 | Fraction | Codeforces | Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) | 1 |
| 26 | Timofey and cubes | Codeforces | Codeforces Round #395 (Div. 2) | 1 |
| 27 | Shell Game | Codeforces | Codeforces Round #401 (Div. 2) | 1 |
| 28 | Mahmoud and Longest Uncommon Subsequence | Codeforces | Codeforces Round #396 (Div. 2) | 1 |
| 29 | Mike and palindrome | Codeforces | Codeforces Round #410 (Div. 2) | 1 |
| 30 | Mahmoud and a Triangle | Codeforces | Codeforces Round #396 (Div. 2) | 1 |
| 31 | Chloe and the sequence | Codeforces | Codeforces Round #384 (Div. 2) | 1 |
| 32 | Vladik and flights | Codeforces | Codeforces Round #384 (Div. 2) | 1 |
| 33 | Chris and Magic Square | Codeforces | Codeforces Round #369 (Div. 2) | 1 |
| 34 | Buggy Sorting | Codeforces | Codeforces Round #151 (Div. 2) | 2 |
| 35 | Bear and Forgotten Tree 3 | Codeforces | VK Cup 2016 - Round 1 | 2 |
| 36 | Print Check | Codeforces | Codeforces Round #344 (Div. 2) | 2 |
| 37 | K-special Tables | Codeforces | Codeforces Round #342 (Div. 2) | 2 |
| 38 | War of the Corporations | Codeforces | Codeforces Round #342 (Div. 2) | 2 |
| 39 | Guess the Permutation | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 2 |
| 40 | Sorting Railway Cars | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 2 |
| 41 | GCD Table | Codeforces | Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) | 2 |
| 42 | Replacement | Codeforces | Codeforces Round #316 (Div. 2) | 2 |
| 43 | Gerald is into Art | Codeforces | Codeforces Round #313 (Div. 2) | 2 |
| 44 | Soldier and Number Game | Codeforces | Codeforces Round #304 (Div. 2) | 2 |
| 45 | Sea and Islands | Codeforces | Codeforces Round #302 (Div. 2) | 2 |
| 46 | Painting Pebbles | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 2 |
| 47 | New Year Book Reading | Codeforces | Good Bye 2014 | 2 |
| 48 | Removing Columns | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 2 |
| 49 | Vasya and Chess | Codeforces | Codeforces Round #281 (Div. 2) | 2 |
| 50 | Bits | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 2 |
| 51 | 24 Game | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 2 |
| 52 | Valera and Tubes | Codeforces | Codeforces Round #252 (Div. 2) | 2 |
| 53 | Mashmokh and Numbers | Codeforces | Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) | 2 |
| 54 | New Year Present | Codeforces | Good Bye 2013 | 2 |
| 55 | Levko and Table | Codeforces | Codeforces Round #210 (Div. 2) | 2 |
| 56 | Vasya and Digital Root | Codeforces | Codeforces Round #206 (Div. 2) | 2 |
| 57 | Beautiful Sets of Points | Codeforces | Codeforces Round #164 (Div. 2) | 2 |
| 58 | Escape from Stones | Codeforces | Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) | 2 |
| 59 | Bear and Prime 100 | Codeforces | Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) | 2 |
| 60 | Little Robber Girl's Zoo | Codeforces | Codeforces Round #359 (Div. 2) | 2 |
| 61 | Restoring Painting | Codeforces | Codeforces Round #353 (Div. 2) | 2 |
| 62 | Alyona and mex | Codeforces | Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) | 2 |
| 63 | Plus and Square Root | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 2 |
| 64 | Valued Keys | Codeforces | Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) | 2 |
| 65 | Maxim Buys an Apartment | Codeforces | Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) | 2 |
| 66 | Alyona and flowers | Codeforces | Codeforces Round #381 (Div. 2) | 2 |
| 67 | Parallelogram is Back | Codeforces | Codeforces Round #388 (Div. 2) | 2 |
| 68 | Lesha and array splitting | Codeforces | Codeforces Round #390 (Div. 2) | 2 |
| 69 | Vladik and fractions | Codeforces | Codeforces Round #384 (Div. 2) | 2 |
| 70 | An express train to reveries | Codeforces | Codeforces Round #418 (Div. 2) | 2 |
| 71 | Cumulative Sum Query | SPOJ | 2 | |
| 72 | Cards with Numbers | Codeforces | Codeforces Round #155 (Div. 2) | 3 |
| 73 | Lucky String | Codeforces | Codeforces Beta Round #84 (Div. 2 Only) | 3 |
| 74 | Easter Eggs | Codeforces | Codeforces Beta Round #70 (Div. 2) | 3 |
| 75 | Increasing Sequence | Codeforces | Codeforces Beta Round #11 | 3 |
| 76 | Kalevitch and Chess | Codeforces | Codeforces Beta Round #7 | 3 |
| 77 | Longest Regular Bracket Sequence | Codeforces | Codeforces Beta Round #5 | 3 |
| 78 | Parliament of Berland | Codeforces | CROC 2016 - Qualification | 3 |
| 79 | A Trivial Problem | Codeforces | Manthan, Codefest 16 | 3 |
| 80 | Cards | Codeforces | 8VC Venture Cup 2016 - Elimination Round | 3 |
| 81 | Graph and String | Codeforces | AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) | 3 |
| 82 | Polyline | Codeforces | Codeforces Round #340 (Div. 2) | 3 |
| 83 | Marina and Vasya | Codeforces | Codeforces Round #324 (Div. 2) | 3 |
| 84 | Misha and Forest | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 3 |
| 85 | Secret Combination | Codeforces | Codeforces Round #283 (Div. 2) | 3 |
| 86 | Interesting Array | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 3 |
| 87 | Pashmak and Buses | Codeforces | Codeforces Round #261 (Div. 2) | 3 |
| 88 | Football | Codeforces | RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) | 3 |
| 89 | A + B Strikes Back | Codeforces | April Fools Day Contest 2014 | 3 |
| 90 | Searching for Graph | Codeforces | Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) | 3 |
| 91 | Valera and Contest | Codeforces | Codeforces Round #216 (Div. 2) | 3 |
| 92 | Levko and Permutation | Codeforces | Codeforces Round #210 (Div. 2) | 3 |
| 93 | Permutation | Codeforces | Codeforces Round #209 (Div. 2) | 3 |
| 94 | Flag Day | Codeforces | Codeforces Round #207 (Div. 2) | 3 |
| 95 | Xenia and Weights | Codeforces | Codeforces Round #197 (Div. 2) | 3 |
| 96 | Purification | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 3 |
| 97 | Ilya and Matrix | Codeforces | Codeforces Round #186 (Div. 2) | 3 |
| 98 | Lucky Permutation Triple | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 3 |
| 99 | Cows and Sequence | Codeforces | Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) | 3 |
| 100 | XOR and OR | Codeforces | Codeforces Round #173 (Div. 2) | 3 |
| 101 | Dice Tower | Codeforces | Codeforces Round #139 (Div. 2) | 3 |
| 102 | Little Elephant and Array | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 3 |
| 103 | Coat of Anticubism | Codeforces | Codeforces Round #349 (Div. 2) | 3 |
| 104 | From Y to Y | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 3 |
| 105 | Short Program | Codeforces | Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) | 3 |
| 106 | Mister B and Angle in Polygon | Codeforces | Codeforces Round #421 (Div. 2) | 3 |
| 107 | Mike and Cellphone | Codeforces | Codeforces Round #361 (Div. 2) | 3 |
| 108 | Magic, Wizardry and Wonders | Codeforces | Codeforces Round #143 (Div. 2) | 4 |
| 109 | Hometask | Codeforces | Codeforces Round #131 (Div. 2) | 4 |
| 110 | Plate Game | Codeforces | Codeforces Round #124 (Div. 2) | 4 |
| 111 | Mysterious numbers - 1 | Codeforces | April Fools Day Contest | 4 |
| 112 | Little Frog | Codeforces | Codeforces Beta Round #49 (Div. 2) | 4 |
| 113 | Rebus | Codeforces | Codeforces Round #347 (Div. 1) & Codeforces Round #347 (Div. 2) | 4 |
| 114 | Amity Assessment | Codeforces | CROC 2016 - Elimination Round | 4 |
| 115 | Little Artem and Dance | Codeforces | VK Cup 2016 - Round 2 | 4 |
| 116 | Home Numbers | Codeforces | VK Cup 2016 - Qualification Round 2 | 4 |
| 117 | Promocodes with Mistakes | Codeforces | VK Cup 2016 - Qualification Round 1 | 4 |
| 118 | Island Puzzle | Codeforces | 8VC Venture Cup 2016 - Final Round (Div. 1 Edition) & 8VC Venture Cup 2016 - Final Round (Div. 2 Edition) | 4 |
| 119 | Alice, Bob, Two Teams | Codeforces | Educational Codeforces Round 9 | 4 |
| 120 | Harmony Analysis | Codeforces | Codeforces Round #337 (Div. 2) | 4 |
| 121 | Lazy Student | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 4 |
| 122 | Three Logos | Codeforces | Codeforces Round #322 (Div. 2) | 4 |
| 123 | Tree Requests | Codeforces | Codeforces Round #316 (Div. 2) | 4 |
| 124 | ZgukistringZ | Codeforces | Codeforces Round #307 (Div. 2) | 4 |
| 125 | Regular Bridge | Codeforces | Codeforces Round #306 (Div. 2) | 4 |
| 126 | Weird Chess | Codeforces | Codeforces Round #300 | 4 |
| 127 | Drazil and Tiles | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 4 |
| 128 | Dreamoon and Sets | Codeforces | Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) | 4 |
| 129 | Devu and Partitioning of the Array | Codeforces | Codeforces Round #251 (Div. 2) | 4 |
| 130 | Pasha and Hamsters | Codeforces | Coder-Strike 2014 - Finals (online edition, Div. 2) | 4 |
| 131 | Ciel the Commander | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 4 |
| 132 | The Closest Pair | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 4 |
| 133 | Strange Addition | Codeforces | Codeforces Round #184 (Div. 2) | 4 |
| 134 | Yaroslav and Sequence | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 4 |
| 135 | Fish Weight | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 |
| 136 | Parity Game | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 |
| 137 | Lucky Permutation | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 4 |
| 138 | Secret | Codeforces | Codeforces Round #166 (Div. 2) | 4 |
| 139 | Mountain Scenery | Codeforces | Codeforces Round #134 (Div. 2) | 4 |
| 140 | Toy Sum | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 4 |
| 141 | Marco and GCD Sequence | Codeforces | Codeforces Round #447 (Div. 2) | 4 |
| 142 | Beauty Pageant | Codeforces | Codeforces Round #151 (Div. 2) | 5 |
| 143 | Restoring Table | Codeforces | CROC-MBTU 2012, Elimination Round (ACM-ICPC) | 5 |
| 144 | Not Wool Sequences | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 5 |
| 145 | Cycles | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 5 |
| 146 | Clear Symmetry | Codeforces | Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) | 5 |
| 147 | Discounts | Codeforces | VK Cup 2012 Round 1 | 5 |
| 148 | Terse princess | Codeforces | Codeforces Round #105 (Div. 2) | 5 |
| 149 | Lucky Number 2 | Codeforces | Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) | 5 |
| 150 | Queue | Codeforces | Codeforces Round #101 (Div. 2) | 5 |
| 151 | Domino | Codeforces | Yandex.Algorithm 2011 Round 1 | 5 |
| 152 | Sets | Codeforces | Yandex.Algorithm 2011 Qualification 2 | 5 |
| 153 | Petya and His Friends | Codeforces | Codeforces Beta Round #61 (Div. 2) | 5 |
| 154 | Find Color | Codeforces | Codeforces Beta Round #39 | 5 |
| 155 | Unordered Subsequence | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 5 |
| 156 | Four Segments | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 |
| 157 | Obsession with Robots | Codeforces | Codeforces Beta Round #8 | 5 |
| 158 | Stammering Aliens | UVA | 5 | |
| 159 | Simple Subset | Codeforces | Educational Codeforces Round 12 | 5 |
| 160 | Optimal Number Permutation | Codeforces | Educational Codeforces Round 7 | 5 |
| 161 | Points on Plane | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 5 |
| 162 | Tablecity | Codeforces | Bubble Cup 8 - Finals [Online Mirror] | 5 |
| 163 | Kyoya and Permutation | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 5 |
| 164 | Handshakes | Codeforces | Codeforces Round #298 (Div. 2) | 5 |
| 165 | Correcting Mistakes | Codeforces | VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) | 5 |
| 166 | Candy Boxes | Codeforces | Codeforces Round #278 (Div. 2) | 5 |
| 167 | 4-point polyline | Codeforces | MemSQL Start[c]UP 2.0 - Round 1 | 5 |
| 168 | Points and Segments (easy) | Codeforces | Codeforces Round #245 (Div. 2) | 5 |
| 169 | Fox and Minimal path | Codeforces | Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) | 5 |
| 170 | Queue | Codeforces | Codeforces Round #205 (Div. 2) | 5 |
| 171 | Two Heaps | Codeforces | Codeforces Round #205 (Div. 2) | 5 |
| 172 | Block Tower | Codeforces | Codeforces Round #191 (Div. 2) | 5 |
| 173 | Convex Shape | Codeforces | Codeforces Round #168 (Div. 2) | 5 |
| 174 | Suspects | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 5 |
| 175 | Help General | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 |
| 176 | Gluttony | Codeforces | Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) | 5 |
| 177 | Timofey and rectangles | Codeforces | Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) | 5 |
| 178 | Complete The Graph | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 5 |
| 179 | Maxim and Array | Codeforces | Codeforces Round #374 (Div. 2) | 5 |
| 180 | Dispute | Codeforces | Codeforces Round #149 (Div. 2) | 6 |
| 181 | Mathematical Analysis Rocks! | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 6 |
| 182 | Zero-One | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 6 |
| 183 | String | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) | 6 |
| 184 | 3-cycles | Codeforces | Codeforces Beta Round #40 (Div. 2) | 6 |
| 185 | Ant on the Tree | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 6 |
| 186 | Party | Codeforces | Codeforces Beta Round #23 | 6 |
| 187 | International Olympiad | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 6 |
| 188 | Anton and Ira | Codeforces | Codeforces Round #324 (Div. 2) | 6 |
| 189 | Invariance of Tree | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 6 |
| 190 | Brackets in Implications | Codeforces | Codeforces Round #306 (Div. 2) | 6 |
| 191 | Looksery Party | Codeforces | Looksery Cup 2015 | 6 |
| 192 | Prefix Product Sequence | Codeforces | Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) | 6 |
| 193 | Little Pony and Summer Sun Celebration | Codeforces | Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) | 6 |
| 194 | Jzzhu and Apples | Codeforces | Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) | 6 |
| 195 | Mittens | Codeforces | Codeforces Round #217 (Div. 2) | 6 |
| 196 | Dima and Containers | Codeforces | Codeforces Round #208 (Div. 2) | 6 |
| 197 | Compartments | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 6 |
| 198 | Palindrome | Codeforces | MemSQL start[c]up Round 2 - online version | 6 |
| 199 | Banana | Codeforces | MemSQL start[c]up Round 2 - online version | 6 |
| 200 | Flawed Flow | Codeforces | Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) | 6 |
| 201 | Below the Diagonal | Codeforces | Codeforces Round #163 (Div. 2) | 6 |
| 202 | Practice | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 6 |
| 203 | Rooter's Song | Codeforces | Codeforces Round #431 (Div. 1) & Codeforces Round #431 (Div. 2) | 6 |
| 204 | Leha and another game about graph | Codeforces | Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) | 6 |
| 205 | Searching Rectangles | Codeforces | Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) | 6 |
| 206 | Karen and Test | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 6 |
| 207 | Arpa’s overnight party and Mehrdad’s silent entering | Codeforces | Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) | 6 |
| 208 | Vladik and Favorite Game | Codeforces | Codeforces Round #416 (Div. 2) | 6 |
| 209 | Mahmoud and a xor trip | Codeforces | Codeforces Round #396 (Div. 2) | 6 |
| 210 | Mike and distribution | Codeforces | Codeforces Round #410 (Div. 2) | 6 |
| 211 | Boring Partition | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 7 |
| 212 | Numbers | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) | 7 |
| 213 | Hobbits' Party | Codeforces | Codeforces Testing Round #2 | 7 |
| 214 | Before Exam | Codeforces | Codeforces Beta Round #90 | 7 |
| 215 | Russian Roulette | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 7 |
| 216 | Disposition | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 |
| 217 | Journey | Codeforces | Codeforces Beta Round #42 (Div. 2) | 7 |
| 218 | Necklace | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 7 |
| 219 | Square Root of Permutation | Codeforces | Educational Codeforces Round 4 | 7 |
| 220 | Bear and Drawing | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 7 |
| 221 | Idempotent functions | Codeforces | VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) | 7 |
| 222 | Restoring Numbers | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 7 |
| 223 | Sign on Fence | Codeforces | Codeforces Round #276 (Div. 1) | 7 |
| 224 | Kamal-ol-molk's Painting | Codeforces | Bayan 2015 Contest Warm Up | 7 |
| 225 | Hack it! | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 7 |
| 226 | Little Victor and Set | Codeforces | Codeforces Round #262 (Div. 2) | 7 |
| 227 | Valera and Swaps | Codeforces | Codeforces Round #252 (Div. 2) | 7 |
| 228 | Guess the Tree | Codeforces | Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) | 7 |
| 229 | Square Table | Codeforces | RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) | 7 |
| 230 | Lucky Number Representation | Codeforces | Codeforces Round #206 (Div. 1) | 7 |
| 231 | Wrong Floyd | Codeforces | Codeforces Round #203 (Div. 2) | 7 |
| 232 | Graph Reconstruction | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 7 |
| 233 | Axis Walking | Codeforces | Codeforces Round #191 (Div. 2) | 7 |
| 234 | Splitting the Uniqueness | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 7 |
| 235 | Set of Points | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 7 |
| 236 | Dima and Horses | Codeforces | Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) | 7 |
| 237 | Maxim and Matrix | Codeforces | Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) | 7 |
| 238 | Black and White Tree | Codeforces | Codeforces Round #158 (Div. 2) | 7 |
| 239 | The table | Codeforces | Codeforces Round #140 (Div. 1) | 7 |
| 240 | Graph Cutting | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 7 |
| 241 | Data Center Drama | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 7 |
| 242 | Vladik and chat | Codeforces | Codeforces Round #390 (Div. 2) | 7 |
| 243 | Challenging Balloons | Codeforces | Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) | 8 |
| 244 | Trails and Glades | Codeforces | VK Cup 2012 Finals, Practice Session | 8 |
| 245 | Hamming Distance | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 8 |
| 246 | Headquarters | Codeforces | Croc Champ 2012 - Final | 8 |
| 247 | Playing with Superglue | Codeforces | Croc Champ 2012 - Round 2 | 8 |
| 248 | Clearing Up | Codeforces | Codeforces Round #101 (Div. 2) | 8 |
| 249 | Swaps | Codeforces | Codeforces Testing Round #3 | 8 |
| 250 | Constants in the language of Shakespeare | Codeforces | Codeforces Beta Round #96 (Div. 1) | 8 |
| 251 | E-reader Display | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 8 |
| 252 | Lucky Sorting | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) | 8 |
| 253 | Superset | Codeforces | Yandex.Algorithm 2011 Finals | 8 |
| 254 | Polycarp's Picture Gallery | Codeforces | Yandex.Algorithm Open 2011 Qualification 1 | 8 |
| 255 | Dividing Island | Codeforces | Codeforces Beta Round #59 (Div. 2) | 8 |
| 256 | Team Arrangement | Codeforces | Codeforces Beta Round #55 (Div. 2) | 8 |
| 257 | Planting Trees | Codeforces | School Team Contest #3 (Winter Computer School 2010/11) | 8 |
| 258 | Director | Codeforces | School Team Contest #3 (Winter Computer School 2010/11) | 8 |
| 259 | Triminoes | Codeforces | School Team Contest #2 (Winter Computer School 2010/11) | 8 |
| 260 | Safe cracking | Codeforces | Codeforces Beta Round #41 | 8 |
| 261 | Tricky and Clever Password | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 8 |
| 262 | Parquet | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 8 |
| 263 | Oranges and Apples | Codeforces | Codeforces Beta Round #23 | 8 |
| 264 | Start of the session | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 8 |
| 265 | Greedy Change | Codeforces | Codeforces Beta Round #10 | 8 |
| 266 | Finals in arithmetic | Codeforces | Codeforces Round #342 (Div. 2) | 8 |
| 267 | Double Knapsack | Codeforces | Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) | 8 |
| 268 | CNF 2 | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 8 |
| 269 | Square Tiling | Codeforces | Codeforces Round #246 (Div. 2) | 8 |
| 270 | Biathlon Track | Codeforces | Codeforces Round #242 (Div. 2) | 8 |
| 271 | Dominoes | Codeforces | Codeforces Round #231 (Div. 2) | 8 |
| 272 | Inna and Sweet Matrix | Codeforces | Codeforces Round #229 (Div. 2) | 8 |
| 273 | Broken Monitor | Codeforces | Codeforces Round #217 (Div. 2) | 8 |
| 274 | Bags and Coins | Codeforces | Codeforces Round #207 (Div. 1) | 8 |
| 275 | Three Swaps | Codeforces | Codeforces Round #197 (Div. 2) | 8 |
| 276 | Black-and-White Cube | Codeforces | Testing Round #7 | 8 |
| 277 | Balance | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 8 |
| 278 | Ilya and Two Numbers | Codeforces | Codeforces Round #186 (Div. 2) | 8 |
| 279 | Yaroslav and Algorithm | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 8 |
| 280 | Ladies' Shop | Codeforces | Codeforces Round #176 (Div. 1) | 8 |
| 281 | Three Horses | Codeforces | Codeforces Round #166 (Div. 2) | 8 |
| 282 | Merging Two Decks | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 8 |
| 283 | Stars | Codeforces | Codeforces Round #131 (Div. 1) | 9 |
| 284 | Pixels | Codeforces | VK Cup 2012 Finals, Practice Session | 9 |
| 285 | Deputies | Codeforces | Croc Champ 2012 - Round 1 | 9 |
| 286 | Two progressions | Codeforces | Codeforces Testing Round #2 | 9 |
| 287 | Tetris revisited | Codeforces | Yandex.Algorithm 2011 Round 2 | 9 |
| 288 | Strange town | Codeforces | Codeforces Beta Round #41 | 9 |
| 289 | Two Paths | Codeforces | Codeforces Beta Round #36 | 9 |
| 290 | Multithreading | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 9 |
| 291 | Beautiful Function | Codeforces | Codeforces Round #329 (Div. 2) | 9 |
| 292 | Walking! | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] | 9 |
| 293 | Replicating Processes | Codeforces | VK Cup 2015 - Finals, online mirror | 9 |
| 294 | Berland Local Positioning System | Codeforces | Codeforces Round #298 (Div. 2) | 9 |
| 295 | Constrained Tree | Codeforces | Rockethon 2015 | 9 |
| 296 | Fox And Polygon | Codeforces | Codeforces Round #290 (Div. 1) | 9 |
| 297 | Design Tutorial: Change the Goal | Codeforces | Codeforces Round #270 | 9 |
| 298 | Tree and Array | Codeforces | Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) | 9 |
| 299 | Candies Game | Codeforces | Codeforces Round #198 (Div. 1) | 9 |
| 300 | Lucky Tickets | Codeforces | Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) | 9 |
| 301 | The Evil Temple and the Moving Rocks | Codeforces | Codeforces Round #192 (Div. 1) | 9 |
| 302 | Tournament-graph | Codeforces | Testing Round #7 | 9 |
| 303 | Color the Carpet | Codeforces | Codeforces Round #180 (Div. 1) | 9 |
| 304 | Grocer's Problem | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) | 9 |
| 305 | Parquet Re-laying | Codeforces | Codeforces Round #402 (Div. 1) | 9 |
| 306 | Mister B and Flight to the Moon | Codeforces | Codeforces Round #421 (Div. 1) | 9 |
| 307 | Mike and code of a permutation | Codeforces | Codeforces Round #410 (Div. 2) | 9 |
| 308 | Doe Graphs | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 10 |
| 309 | Cube Snake | Codeforces | Codeforces Round #125 (Div. 1) | 10 |
| 310 | Help Monks | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) | 10 |
| 311 | Shift It! | Codeforces | Codeforces Beta Round #68 | 10 |
| 312 | Black and White | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 10 |
| 313 | Ants on a Circle | Codeforces | Educational Codeforces Round 10 | 10 |
| 314 | New Year and Forgotten Tree | Codeforces | Good Bye 2015 | 10 |
| 315 | Restoring Map | Codeforces | VK Cup 2015 - Finals, online mirror | 10 |
| 316 | Listening to Music | Codeforces | Codeforces Round #302 (Div. 1) | 10 |
| 317 | Berserk Robot | Codeforces | Codeforces Round #300 | 10 |
| 318 | Design Tutorial: Learn from a Game | Codeforces | Codeforces Round #270 | 10 |
| 319 | Flow Optimality | Codeforces | MemSQL Start[c]UP 2.0 - Round 2 | 10 |
| 320 | Deja Vu | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 |
| 321 | Deja Vu | Codeforces | ABBYY Cup 3.0 - Finals (online version) | 10 |
| 322 | Princess and Her Shadow | Codeforces | Codeforces Round #188 (Div. 1) | 10 |
| 323 | Suns and Rays | Codeforces | ABBYY Cup 3.0 | 10 |
| 324 | Polygon | Codeforces | Testing Round #6 | 10 |
| 325 | HQ | Codeforces | April Fools Day Contest 2013 | 10 |
| 326 | Dynamic Programming | A2 Online Judge | 10 | |
| 327 | Karen and Neighborhood | Codeforces | Codeforces Round #419 (Div. 1) | 10 |
| 328 | Chess Championship | Codeforces | Codeforces Round #382 (Div. 1) | 10 |
| 329 | Finding lines | Codeforces | Codeforces Round #407 (Div. 1) | 10 |
| 330 | Create a Maze | Codeforces | Codeforces Round #372 (Div. 1) | 10 |
| 331 | Perpetual Motion Machine | Codeforces | Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) | 10 |