| Problem Name | Online Judge | Year | Contest | Difficulty Level | |
|---|---|---|---|---|---|
| 1 | Xenia and Bit Operations | Codeforces | Codeforces Round #197 (Div. 2) | 1 | |
| 2 | Mashmokh and ACM | Codeforces | Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) | 1 | |
| 3 | Flowers | Codeforces | Codeforces Round #271 (Div. 2) | 1 | |
| 4 | Queue | Codeforces | Codeforces Round #303 (Div. 2) | 1 | |
| 5 | Tetrahedron | Codeforces | Codeforces Round #113 (Div. 2) | 1 | |
| 6 | Coffee Central | Live Archive | 2011 | World Finals - Orlando | 1 |
| 7 | Longest Common Subsequence | UVA | 1 | ||
| 8 | Caesar's Legions | Codeforces | Codeforces Beta Round #89 (Div. 2) | 2 | |
| 9 | Password | Codeforces | Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) | 2 | |
| 10 | Prizes, Prizes, more Prizes | Codeforces | Codeforces Round #130 (Div. 2) | 2 | |
| 11 | Alternating Current | Codeforces | Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) | 2 | |
| 12 | Multiplication Table | Codeforces | Codeforces Round #256 (Div. 2) | 2 | |
| 13 | Vasya and Chess | Codeforces | Codeforces Round #281 (Div. 2) | 2 | |
| 14 | Soldier and Number Game | Codeforces | Codeforces Round #304 (Div. 2) | 2 | |
| 15 | Equivalent Strings | Codeforces | Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) | 2 | |
| 16 | Dima and Lisa | Codeforces | Codeforces Round #324 (Div. 2) | 2 | |
| 17 | Magic Powder - 1 | Codeforces | Codeforces Round #350 (Div. 2) | 2 | |
| 18 | Magic Powder - 2 | Codeforces | Codeforces Round #350 (Div. 2) | 2 | |
| 19 | Taxes | Codeforces | Codeforces Round #382 (Div. 2) & Codeforces Round #382 (Div. 1) | 2 | |
| 20 | String Game | Codeforces | Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) | 2 | |
| 21 | Minimum number of steps | Codeforces | Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2) | 2 | |
| 22 | Mysterious Present | Codeforces | Codeforces Beta Round #4 (Div. 2 Only) | 3 | |
| 23 | Common Divisors | Codeforces | Codeforces Round #117 (Div. 2) | 3 | |
| 24 | Choosing Capital for Treeland | Codeforces | Codeforces Round #135 (Div. 2) | 3 | |
| 25 | Little Elephant and Array | Codeforces | Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) | 3 | |
| 26 | Colorful Graph | Codeforces | Codeforces Round #151 (Div. 2) | 3 | |
| 27 | Good Sequences | Codeforces | Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) | 3 | |
| 28 | Greenhouse Effect | Codeforces | Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) | 3 | |
| 29 | Good Substrings | Codeforces | Codeforces Round #166 (Div. 2) | 3 | |
| 30 | Little Girl and Maximum XOR | Codeforces | Codeforces Round #169 (Div. 2) | 3 | |
| 31 | Greg and Graph | Codeforces | Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) | 3 | |
| 32 | Biridian Forest | Codeforces | Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) | 3 | |
| 33 | Bubble Sort Graph | Codeforces | Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) | 3 | |
| 34 | Long Path | Codeforces | Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) | 3 | |
| 35 | Working out | Codeforces | Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) | 3 | |
| 36 | Andrey and Problem | Codeforces | Codeforces Round #253 (Div. 1) & Codeforces Round #253 (Div. 2) | 3 | |
| 37 | Pashmak and Parmida's problem | Codeforces | Codeforces Round #261 (Div. 2) | 3 | |
| 38 | Gargari and Permutations | Codeforces | Codeforces Round #264 (Div. 2) | 3 | |
| 39 | Long Jumps | Codeforces | Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) | 3 | |
| 40 | Interesting Array | Codeforces | Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) | 3 | |
| 41 | Maximum Value | Codeforces | Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) | 3 | |
| 42 | Unbearable Controversy of Being | Codeforces | Codeforces Round #277.5 (Div. 2) | 3 | |
| 43 | Ilya and Escalator | Codeforces | Codeforces Round #293 (Div. 2) | 3 | |
| 44 | A and B and Interesting Substrings | Codeforces | Codeforces Round #294 (Div. 2) | 3 | |
| 45 | Mike and Feet | Codeforces | Codeforces Round #305 (Div. 1) & Codeforces Round #305 (Div. 2) | 3 | |
| 46 | Bear and Blocks | Codeforces | Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) | 3 | |
| 47 | "Or" Game | Codeforces | Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] | 3 | |
| 48 | Kefa and Dishes | Codeforces | Codeforces Round #321 (Div. 2) | 3 | |
| 49 | Zuma | Codeforces | Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) | 3 | |
| 50 | Polyline | Codeforces | Codeforces Round #340 (Div. 2) | 3 | |
| 51 | Bicycle Race | Codeforces | Codeforces Round #346 (Div. 2) | 3 | |
| 52 | Fix a Tree | Codeforces | Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) | 3 | |
| 53 | Vasiliy's Multiset | Codeforces | Codeforces Round #367 (Div. 2) | 3 | |
| 54 | Lakes in Berland | Codeforces | Codeforces Round #375 (Div. 2) | 3 | |
| 55 | Exams | Codeforces | Codeforces Round #377 (Div. 2) | 3 | |
| 56 | Kostya the Sculptor | Codeforces | Codeforces Round #378 (Div. 2) | 3 | |
| 57 | Anton and Chess | Codeforces | Codeforces Round #379 (Div. 2) | 3 | |
| 58 | Arpa's weak amphitheater and Mehrdad's valuable Hoses | Codeforces | Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) | 3 | |
| 59 | Green and Black Tea | Codeforces | Codeforces Round #386 (Div. 2) | 3 | |
| 60 | Cloud of Hashtags | Codeforces | Codeforces Round #401 (Div. 2) | 3 | |
| 61 | Make a Permutation! | Codeforces | Codeforces Round #436 (Div. 2) | 3 | |
| 62 | Sorting the Coins | Codeforces | Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) | 3 | |
| 63 | Love Rescue | Codeforces | Codeforces Round #464 (Div. 2) | 3 | |
| 64 | Roads not only in Berland | Codeforces | Codeforces Beta Round #25 (Div. 2 Only) | 4 | |
| 65 | Road Map | Codeforces | Codeforces Beta Round #34 (Div. 2) | 4 | |
| 66 | Eternal Victory | Codeforces | Codeforces Beta Round #57 (Div. 2) | 4 | |
| 67 | Queue | Codeforces | Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) | 4 | |
| 68 | Petya and Divisors | Codeforces | Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) | 4 | |
| 69 | Subway | Codeforces | Codeforces Beta Round #95 (Div. 2) | 4 | |
| 70 | Bag of mice | Codeforces | Codeforces Round #105 (Div. 2) | 4 | |
| 71 | Quantity of Strings | Codeforces | Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2) | 4 | |
| 72 | Colliders | Codeforces | Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) | 4 | |
| 73 | Little Elephant and Cards | Codeforces | Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) | 4 | |
| 74 | Planets | Codeforces | Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) | 4 | |
| 75 | Magic Box | Codeforces | Codeforces Round #143 (Div. 2) | 4 | |
| 76 | Zero Tree | Codeforces | Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) | 4 | |
| 77 | Cow Program | Codeforces | Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) | 4 | |
| 78 | Polo the Penguin and Houses | Codeforces | Codeforces Round #177 (Div. 1) | 4 | |
| 79 | Fish Weight | Codeforces | Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) | 4 | |
| 80 | Psychos in a Line | Codeforces | Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) | 4 | |
| 81 | Book of Evil | Codeforces | Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) | 4 | |
| 82 | Pair of Numbers | Codeforces | Codeforces Round #209 (Div. 2) | 4 | |
| 83 | Vessels | Codeforces | Codeforces Round #218 (Div. 2) | 4 | |
| 84 | Maximum Submatrix 2 | Codeforces | Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) | 4 | |
| 85 | Toy Sum | Codeforces | Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) | 4 | |
| 86 | Prefixes and Suffixes | Codeforces | Codeforces Round #246 (Div. 2) | 4 | |
| 87 | The Child and Zoo | Codeforces | Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) | 4 | |
| 88 | Devu and his Brother | Codeforces | Codeforces Round #251 (Div. 2) | 4 | |
| 89 | DZY Loves Modification | Codeforces | Codeforces Round #255 (Div. 1) & Codeforces Round #255 (Div. 2) | 4 | |
| 90 | Jzzhu and Cities | Codeforces | Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) | 4 | |
| 91 | Count Good Substrings | Codeforces | Codeforces Round #258 (Div. 2) | 4 | |
| 92 | Little Pony and Harmony Chest | Codeforces | Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) | 4 | |
| 93 | A Lot of Games | Codeforces | Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) | 4 | |
| 94 | Appleman and Tree | Codeforces | Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) | 4 | |
| 95 | Two Sets | Codeforces | Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) | 4 | |
| 96 | MUH and Cube Walls | Codeforces | Codeforces Round #269 (Div. 2) | 4 | |
| 97 | Design Tutorial: Inverse the Problem | Codeforces | Codeforces Round #270 | 4 | |
| 98 | Dreamoon and Sets | Codeforces | Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) | 4 | |
| 99 | Red-Green Towers | Codeforces | Codeforces Round #273 (Div. 2) | 4 | |
| 100 | Vanya and Computer Game | Codeforces | Codeforces Round #280 (Div. 2) | 4 | |
| 101 | Tennis Game | Codeforces | Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) | 4 | |
| 102 | Fox And Jumping | Codeforces | Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) | 4 | |
| 103 | Drazil and Tiles | Codeforces | Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) | 4 | |
| 104 | Clique Problem | Codeforces | Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) | 4 | |
| 105 | Tavas and Malekas | Codeforces | Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1) | 4 | |
| 106 | Weird Chess | Codeforces | Codeforces Round #300 | 4 | |
| 107 | Bad Luck Island | Codeforces | Codeforces Round #301 (Div. 2) | 4 | |
| 108 | Destroying Roads | Codeforces | Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) | 4 | |
| 109 | Regular Bridge | Codeforces | Codeforces Round #306 (Div. 2) | 4 | |
| 110 | Vanya and Triangles | Codeforces | Codeforces Round #308 (Div. 2) | 4 | |
| 111 | Case of Fugitive | Codeforces | Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) | 4 | |
| 112 | One-Dimensional Battle Ships | Codeforces | Codeforces Round #Pi (Div. 2) | 4 | |
| 113 | Tree Requests | Codeforces | Codeforces Round #316 (Div. 2) | 4 | |
| 114 | Three Logos | Codeforces | Codeforces Round #322 (Div. 2) | 4 | |
| 115 | Phillip and Trains | Codeforces | Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) | 4 | |
| 116 | Spongebob and Squares | Codeforces | Codeforces Round #332 (Div. 2) | 4 | |
| 117 | Lazy Student | Codeforces | Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) | 4 | |
| 118 | Multipliers | Codeforces | Codeforces Round #338 (Div. 2) | 4 | |
| 119 | Babaei and Birthday Cake | Codeforces | Codeforces Round #343 (Div. 2) | 4 | |
| 120 | Image Preview | Codeforces | Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) | 4 | |
| 121 | Little Artem and Dance | Codeforces | VK Cup 2016 - Round 2 | 4 | |
| 122 | Bear and Two Paths | Codeforces | VK Cup 2016 - Round 3 | 4 | |
| 123 | Robin Hood | Codeforces | Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) | 4 | |
| 124 | Tree Construction | Codeforces | Codeforces Round #353 (Div. 2) | 4 | |
| 125 | Remainders Game | Codeforces | Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) | 4 | |
| 126 | Puzzles | Codeforces | Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) | 4 | |
| 127 | As Fast As Possible | Codeforces | Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) | 4 | |
| 128 | Directed Roads | Codeforces | Codeforces Round #369 (Div. 2) | 4 | |
| 129 | Sea Battle | Codeforces | Technocup 2017 - Elimination Round 2 | 4 | |
| 130 | Alyona and a tree | Codeforces | Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) | 4 | |
| 131 | Chloe and pleasant prizes | Codeforces | Codeforces Round #384 (Div. 2) | 4 | |
| 132 | Dasha and Very Difficult Problem | Codeforces | Codeforces Round #394 (Div. 2) | 4 | |
| 133 | Travel Card | Codeforces | 8VC Venture Cup 2017 - Final Round | 4 | |
| 134 | The Door Problem | Codeforces | ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined) | 4 | |
| 135 | Innokenty and a Football League | Codeforces | ?????????? 2017 - ????? (?????? ??? ??????-??????????) | 4 | |
| 136 | Volatile Kite | Codeforces | VK Cup 2017 - Round 2 | 4 | |
| 137 | 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 | |
| 138 | High Load | Codeforces | Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals) | 4 | |
| 139 | My pretty girl Noora | Codeforces | Codeforces Round #422 (Div. 2) | 4 | |
| 140 | Alarm Clock | Codeforces | Codeforces Round #451 (Div. 2) | 4 | |
| 141 | Palindrome pairs | Codeforces | VK Cup 2012 Qualification Round 2 | 4 | |
| 142 | Least Cost Bracket Sequence | Codeforces | Codeforces Beta Round #3 | 5 | |
| 143 | Palindrome Degree | Codeforces | Codeforces Beta Round #7 | 5 | |
| 144 | How many trees? | Codeforces | Codeforces Beta Round #9 (Div. 2 Only) | 5 | |
| 145 | A Simple Task | Codeforces | Codeforces Beta Round #11 | 5 | |
| 146 | Two Paths | Codeforces | Codeforces Beta Round #14 (Div. 2) | 5 | |
| 147 | Petya and His Friends | Codeforces | Codeforces Beta Round #61 (Div. 2) | 5 | |
| 148 | Falling Anvils | Codeforces | Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) | 5 | |
| 149 | Volleyball | Codeforces | Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) | 5 | |
| 150 | Basketball Team | Codeforces | Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) | 5 | |
| 151 | Petr# | Codeforces | Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) | 5 | |
| 152 | Lawnmower | Codeforces | Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) | 5 | |
| 153 | Lucky Transformation | Codeforces | Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) | 5 | |
| 154 | Rectangle and Square | Codeforces | Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) | 5 | |
| 155 | New Year Contest | Codeforces | Codeforces Round #100 | 5 | |
| 156 | Help General | Codeforces | Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) | 5 | |
| 157 | Missile Silos | Codeforces | Codeforces Round #103 (Div. 2) | 5 | |
| 158 | Lucky Number 2 | Codeforces | Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) | 5 | |
| 159 | Suspects | Codeforces | Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) | 5 | |
| 160 | Infinite Maze | Codeforces | Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2) | 5 | |
| 161 | Jumping on Walls | Codeforces | Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) | 5 | |
| 162 | Olympiad | Codeforces | Codeforces Round #137 (Div. 2) | 5 | |
| 163 | Cycle in Graph | Codeforces | Codeforces Round #161 (Div. 2) | 5 | |
| 164 | Dima and Two Sequences | Codeforces | Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) | 5 | |
| 165 | Maximum Xor Secondary | Codeforces | Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) | 5 | |
| 166 | Yaroslav and Time | Codeforces | Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) | 5 | |
| 167 | Ciel and Duel | Codeforces | Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) | 5 | |
| 168 | Block Tower | Codeforces | Codeforces Round #191 (Div. 2) | 5 | |
| 169 | Chips | Codeforces | Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) | 5 | |
| 170 | Lucky Common Subsequence | Codeforces | Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) | 5 | |
| 171 | Jeff and Furik | Codeforces | Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) | 5 | |
| 172 | Queue | Codeforces | Codeforces Round #205 (Div. 2) | 5 | |
| 173 | Xenia and Hamming | Codeforces | Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) | 5 | |
| 174 | Dima and Hares | Codeforces | Codeforces Round #208 (Div. 2) | 5 | |
| 175 | Levko and Array | Codeforces | Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) | 5 | |
| 176 | Renting Bikes | Codeforces | Codeforces Round #211 (Div. 2) | 5 | |
| 177 | Sereja ans Anagrams | Codeforces | Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) | 5 | |
| 178 | Counting Rectangles is Fun | Codeforces | Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) | 5 | |
| 179 | Preparing for the Contest | Codeforces | Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) | 5 | |
| 180 | Fox and Minimal path | Codeforces | Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) | 5 | |
| 181 | Dima and Bacteria | Codeforces | Codeforces Round #234 (Div. 2) | 5 | |
| 182 | Roman and Numbers | Codeforces | Codeforces Round #235 (Div. 2) | 5 | |
| 183 | Upgrading Array | Codeforces | Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) | 5 | |
| 184 | Restore Cube | Codeforces | Codeforces Round #265 (Div. 1) | 5 | |
| 185 | Increase Sequence | Codeforces | Codeforces Round #266 (Div. 2) | 5 | |
| 186 | Valid Sets | Codeforces | Codeforces Round #277 (Div. 2) | 5 | |
| 187 | Strip | Codeforces | Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) | 5 | |
| 188 | Chocolate | Codeforces | Codeforces Round #279 (Div. 2) | 5 | |
| 189 | Obsessive String | Codeforces | Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) | 5 | |
| 190 | Misha and Permutations Summation | Codeforces | Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) | 5 | |
| 191 | R2D2 and Droid Army | Codeforces | Codeforces Round #291 (Div. 2) | 5 | |
| 192 | Handshakes | Codeforces | Codeforces Round #298 (Div. 2) | 5 | |
| 193 | Kyoya and Permutation | Codeforces | Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) | 5 | |
| 194 | Vitaly and Cycle | Codeforces | Codeforces Round #311 (Div. 2) | 5 | |
| 195 | Symmetric and Transitive | Codeforces | Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) | 5 | |
| 196 | Minimization | Codeforces | Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) | 5 | |
| 197 | Chip 'n Dale Rescue Rangers | Codeforces | Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) | 5 | |
| 198 | Super M | Codeforces | Codeforces Round #328 (Div. 2) | 5 | |
| 199 | Lipshitz Sequence | Codeforces | Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) | 5 | |
| 200 | Moodular Arithmetic | Codeforces | Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) | 5 | |
| 201 | Skills | Codeforces | Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) | 5 | |
| 202 | Theseus and labyrinth | Codeforces | Codeforces Round #354 (Div. 2) | 5 | |
| 203 | Bear and Tower of Cubes | Codeforces | Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) | 5 | |
| 204 | Alyona and Strings | Codeforces | Codeforces Round #358 (Div. 2) | 5 | |
| 205 | Kay and Snowflake | Codeforces | Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) | 5 | |
| 206 | Friends and Subsequences | Codeforces | Codeforces Round #361 (Div. 2) | 5 | |
| 207 | Mishka and Interesting sum | Codeforces | Codeforces Round #365 (Div. 2) | 5 | |
| 208 | Persistent Bookcase | Codeforces | Codeforces Round #368 (Div. 2) | 5 | |
| 209 | Complete The Graph | Codeforces | Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) | 5 | |
| 210 | Maxim and Array | Codeforces | Codeforces Round #374 (Div. 2) | 5 | |
| 211 | Leaving Auction | Codeforces | Codeforces Round #388 (Div. 2) | 5 | |
| 212 | Winter Is Coming | Codeforces | Codeforces Round #387 (Div. 2) | 5 | |
| 213 | Fedor and coupons | Codeforces | Codeforces Round #390 (Div. 2) | 5 | |
| 214 | Ability To Convert | Codeforces | Codeforces Round #392 (Div. 2) | 5 | |
| 215 | Mahmoud and a Dictionary | Codeforces | Codeforces Round #396 (Div. 2) | 5 | |
| 216 | Timofey and rectangles | Codeforces | Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) | 5 | |
| 217 | Artsem and Saunders | Codeforces | Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) | 5 | |
| 218 | Cartons of milk | Codeforces | Codeforces Round #398 (Div. 2) | 5 | |
| 219 | Jon and Orbs | Codeforces | Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) | 5 | |
| 220 | Anton and School - 2 | Codeforces | Codeforces Round #404 (Div. 2) | 5 | |
| 221 | Bear and Tree Jumps | Codeforces | VK Cup 2017 - Round 1 | 5 | |
| 222 | Weird journey | Codeforces | Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) | 5 | |
| 223 | Police Stations | Codeforces | Codeforces Round #408 (Div. 2) | 5 | |
| 224 | Field expansion | Codeforces | Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2) | 5 | |
| 225 | Misha, Grisha and Underground | Codeforces | Codeforces Round #425 (Div. 2) | 5 | |
| 226 | Winter is here | Codeforces | Codeforces Round #428 (Div. 2) | 5 | |
| 227 | Palindromic characteristics | Codeforces | Codeforces Round #427 (Div. 2) | 5 | |
| 228 | The Bakery | Codeforces | Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) | 5 | |
| 229 | An overnight dance in discotheque | Codeforces | Codeforces Round #418 (Div. 2) | 5 | |
| 230 | Gluttony | Codeforces | Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) | 5 | |
| 231 | Mahmoud and Ehab and another array construction task | Codeforces | Codeforces Round #473 (Div. 2) | 5 | |
| 232 | Lizards and Basements 2 | Codeforces | Codeforces Beta Round #6 (Div. 2 Only) | 6 | |
| 233 | LCIS | Codeforces | Codeforces Beta Round #10 | 6 | |
| 234 | Segments | Codeforces | Codeforces Beta Round #22 (Div. 2 Only) | 6 | |
| 235 | Ring Road 2 | Codeforces | Codeforces Beta Round #27 (Codeforces format, Div. 2) | 6 | |
| 236 | Ant on the Tree | Codeforces | Codeforces Beta Round #29 (Div. 2, Codeforces format) | 6 | |
| 237 | Animals | Codeforces | Codeforces Beta Round #35 (Div. 2) | 6 | |
| 238 | Permutations | Codeforces | School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) | 6 | |
| 239 | Physical Education | Codeforces | Codeforces Beta Round #49 (Div. 2) | 6 | |
| 240 | Beautiful numbers | Codeforces | Codeforces Beta Round #51 | 6 | |
| 241 | Doctor | Codeforces | Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) | 6 | |
| 242 | Buses | Codeforces | Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) | 6 | |
| 243 | Lucky Probability | Codeforces | Codeforces Beta Round #84 (Div. 1 Only) & Codeforces Beta Round #84 (Div. 2 Only) | 6 | |
| 244 | String | Codeforces | Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) | 6 | |
| 245 | Palindromes | Codeforces | Codeforces Beta Round #98 (Div. 2) | 6 | |
| 246 | Coloring Brackets | Codeforces | Codeforces Round #106 (Div. 2) | 6 | |
| 247 | Wizards and Huge Prize | Codeforces | Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) | 6 | |
| 248 | Mushroom Scientists | Codeforces | Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) | 6 | |
| 249 | AlgoRace | Codeforces | Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) | 6 | |
| 250 | Non-Secret Cypher | Codeforces | Codeforces Round #120 (Div. 2) | 6 | |
| 251 | Guess That Car! | Codeforces | Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) | 6 | |
| 252 | Hit Ball | Codeforces | Codeforces Round #128 (Div. 2) | 6 | |
| 253 | Numbers | Codeforces | Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) | 6 | |
| 254 | Hot Days | Codeforces | Codeforces Round #132 (Div. 2) | 6 | |
| 255 | Two Strings | Codeforces | Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) | 6 | |
| 256 | Naughty Stone Piles | Codeforces | Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) | 6 | |
| 257 | Table | Codeforces | Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) | 6 | |
| 258 | Cinema | Codeforces | Codeforces Round #145 (Div. 2, ACM-ICPC Rules) & Codeforces Round #145 (Div. 1, ACM-ICPC Rules) | 6 | |
| 259 | Let's Play Osu! | Codeforces | Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) | 6 | |
| 260 | Dispute | Codeforces | Codeforces Round #149 (Div. 2) | 6 | |
| 261 | Hydra | Codeforces | Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) | 6 | |
| 262 | Playing with Permutations | Codeforces | Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) | 6 | |
| 263 | Mr. Bender and Square | Codeforces | Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) | 6 | |
| 264 | Little Elephant and Elections | Codeforces | Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) | 6 | |
| 265 | Sum | Codeforces | Codeforces Round #159 (Div. 2) | 6 | |
| 266 | Maxim and Restaurant | Codeforces | Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) | 6 | |
| 267 | Yet Another Number Game | Codeforces | Codeforces Round #173 (Div. 2) | 6 | |
| 268 | Permutation Sum | Codeforces | Codeforces Round #175 (Div. 2) | 6 | |
| 269 | Rectangle Puzzle II | Codeforces | Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) | 6 | |
| 270 | Ilya and Roads | Codeforces | Codeforces Round #186 (Div. 2) | 6 | |
| 271 | Sereja and Periods | Codeforces | Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) | 6 | |
| 272 | Ants | Codeforces | Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) | 6 | |
| 273 | Apple Tree | Codeforces | Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) | 6 | |
| 274 | Minesweeper 1D | Codeforces | Codeforces Round #237 (Div. 2) | 6 | |
| 275 | Sereja and Table | Codeforces | Codeforces Round #243 (Div. 1) | 6 | |
| 276 | Match & Catch | Codeforces | Codeforces Round #244 (Div. 2) | 6 | |
| 277 | Random Task | Codeforces | Codeforces Round #247 (Div. 2) | 6 | |
| 278 | Fedor and Essay | Codeforces | Codeforces Round #267 (Div. 2) | 6 | |
| 279 | Mr. Kitayuta's Technology | Codeforces | Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) | 6 | |
| 280 | The Maths Lecture | Codeforces | Codeforces Round #287 (Div. 2) | 6 | |
| 281 | Tanya and Password | Codeforces | Codeforces Round #288 (Div. 2) | 6 | |
| 282 | Cubes | Codeforces | Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) | 6 | |
| 283 | Arthur and Walls | Codeforces | Codeforces Round #297 (Div. 2) | 6 | |
| 284 | GukiZ and Binary Operations | Codeforces | Codeforces Round #307 (Div. 2) | 6 | |
| 285 | Invariance of Tree | Codeforces | Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) | 6 | |
| 286 | Duff in Beach | Codeforces | Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) | 6 | |
| 287 | Messenger | Codeforces | Codeforces Round #344 (Div. 2) | 6 | |
| 288 | Graph Coloring | Codeforces | CROC 2016 - Final Round [Private, For Onsite Finalists Only] | 6 | |
| 289 | World Tour | Codeforces | Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) | 6 | |
| 290 | Vanya and Treasure | Codeforces | Codeforces Round #355 (Div. 2) | 6 | |
| 291 | Gifts by the List | Codeforces | Codeforces Round #357 (Div. 2) | 6 | |
| 292 | Memory and Scores | Codeforces | Codeforces Round #370 (Div. 2) | 6 | |
| 293 | Searching Rectangles | Codeforces | Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) | 6 | |
| 294 | Hongcow's Game | Codeforces | Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) | 6 | |
| 295 | Santa Claus and a Palindrome | Codeforces | Technocup 2017 - Elimination Round 3 | 6 | |
| 296 | Felicity's Big Secret Revealed | Codeforces | Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) | 6 | |
| 297 | Legacy | Codeforces | Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) | 6 | |
| 298 | Vladik and Favorite Game | Codeforces | Codeforces Round #416 (Div. 2) | 6 | |
| 299 | Glad to see you! | Codeforces | Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) | 6 | |
| 300 | Dynamic Problem Scoring | Codeforces | VK Cup 2017 - Round 3 | 6 | |
| 301 | Mike and distribution | Codeforces | Codeforces Round #410 (Div. 2) | 6 | |
| 302 | Karen and Test | Codeforces | Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) | 6 | |
| 303 | Leha and another game about graph | Codeforces | Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) | 6 | |
| 304 | Mister B and PR Shifts | Codeforces | Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) | 6 | |
| 305 | Merge Sort | Codeforces | Educational Codeforces Round 30 | 6 | |
| 306 | Follow Traffic Rules | Codeforces | Codeforces Beta Round #5 | 7 | |
| 307 | Ball | Codeforces | Codeforces Beta Round #12 (Div 2 Only) | 7 | |
| 308 | Logging | Codeforces | Codeforces Beta Round #16 (Div. 2 Only) | 7 | |
| 309 | Seller Bob | Codeforces | Codeforces Beta Round #18 (Div. 2 Only) | 7 | |
| 310 | Points | Codeforces | Codeforces Beta Round #19 | 7 | |
| 311 | Chocolate | Codeforces | Codeforces Beta Round #31 (Div. 2, Codeforces format) | 7 | |
| 312 | Constellation | Codeforces | Codeforces Beta Round #32 (Div. 2, Codeforces format) | 7 | |
| 313 | Knights | Codeforces | Codeforces Beta Round #33 (Codeforces format) | 7 | |
| 314 | Pawn | Codeforces | Codeforces Beta Round #40 (Div. 2) | 7 | |
| 315 | Journey | Codeforces | Codeforces Beta Round #42 (Div. 2) | 7 | |
| 316 | Parking Lot | Codeforces | School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) | 7 | |
| 317 | Game | Codeforces | Codeforces Beta Round #46 (Div. 2) | 7 | |
| 318 | Changing a String | Codeforces | Codeforces Beta Round #52 (Div. 2) | 7 | |
| 319 | Dot | Codeforces | Codeforces Beta Round #63 (Div. 2) | 7 | |
| 320 | Big Maximum Sum | Codeforces | Codeforces Beta Round #67 (Div. 2) | 7 | |
| 321 | Vasya and Types | Codeforces | Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) | 7 | |
| 322 | End of Exams | Codeforces | Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) | 7 | |
| 323 | Russian Roulette | Codeforces | Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) | 7 | |
| 324 | Treasure Island | Codeforces | Codeforces Beta Round #82 (Div. 2) | 7 | |
| 325 | Squares | Codeforces | Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) | 7 | |
| 326 | Digits Permutations | Codeforces | Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) | 7 | |
| 327 | Edges in MST | Codeforces | Codeforces Round #111 (Div. 2) | 7 | |
| 328 | Beard Graph | Codeforces | Codeforces Round #112 (Div. 2) | 7 | |
| 329 | Demonstration | Codeforces | Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) | 7 | |
| 330 | Xor | Codeforces | Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) | 7 | |
| 331 | Analyzing Polyline | Codeforces | Codeforces Round #123 (Div. 2) | 7 | |
| 332 | Programming Language | Codeforces | Codeforces Round #126 (Div. 2) | 7 | |
| 333 | Spider's Web | Codeforces | Codeforces Round #133 (Div. 2) | 7 | |
| 334 | Blackboard Fibonacci | Codeforces | Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) | 7 | |
| 335 | Snake | Codeforces | Codeforces Round #139 (Div. 2) | 7 | |
| 336 | Boring Partition | Codeforces | Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) | 7 | |
| 337 | Table with Letters - 2 | Codeforces | Codeforces Round #154 (Div. 2) | 7 | |
| 338 | Black and White Tree | Codeforces | Codeforces Round #158 (Div. 2) | 7 | |
| 339 | Set of Points | Codeforces | Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) | 7 | |
| 340 | Shifting | Codeforces | Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) | 7 | |
| 341 | Cats Transport | Codeforces | Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) | 7 | |
| 342 | Vasily the Bear and Beautiful Strings | Codeforces | Codeforces Round #195 (Div. 2) | 7 | |
| 343 | Fools and Foolproof Roads | Codeforces | Codeforces Round #212 (Div. 2) | 7 | |
| 344 | Free Market | Codeforces | Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) | 7 | |
| 345 | Dima and Trap Graph | Codeforces | Codeforces Round #214 (Div. 2) | 7 | |
| 346 | Valera and Fools | Codeforces | Codeforces Round #216 (Div. 2) | 7 | |
| 347 | Inna and Sequence | Codeforces | Codeforces Round #220 (Div. 2) | 7 | |
| 348 | Ksenia and Pawns | Codeforces | Codeforces Round #224 (Div. 2) | 7 | |
| 349 | On Sum of Fractions | Codeforces | Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2) | 7 | |
| 350 | Painting The Wall | Codeforces | Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) | 7 | |
| 351 | Population Size | Codeforces | Codeforces Round #241 (Div. 2) | 7 | |
| 352 | Nanami's Digital Board | Codeforces | Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) | 7 | |
| 353 | Special Grid | Codeforces | Codeforces Round #249 (Div. 2) | 7 | |
| 354 | Valera and Swaps | Codeforces | Codeforces Round #252 (Div. 2) | 7 | |
| 355 | DZY Loves FFT | Codeforces | Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2) | 7 | |
| 356 | Little Victor and Set | Codeforces | Codeforces Round #262 (Div. 2) | 7 | |
| 357 | Name That Tune | Codeforces | Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) | 7 | |
| 358 | Restoring Numbers | Codeforces | Codeforces Round #289 (Div. 2, ACM ICPC Rules) | 7 | |
| 359 | Guess Your Way Out! II | Codeforces | Codeforces Round #312 (Div. 2) | 7 | |
| 360 | Happy Tree Party | Codeforces | Codeforces Round #329 (Div. 2) | 7 | |
| 361 | Vika and Segments | Codeforces | Codeforces Round #337 (Div. 2) | 7 | |
| 362 | Rat Kwesh and Cheese | Codeforces | Codeforces Round #341 (Div. 2) | 7 | |
| 363 | Ant Man | Codeforces | Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) | 7 | |
| 364 | 80-th Level Archeology | Codeforces | Codeforces Round #376 (Div. 2) | 7 | |
| 365 | Okabe and City | Codeforces | Codeforces Round #420 (Div. 2) | 7 | |
| 366 | Something with XOR Queries | Codeforces | Technocup 2018 - Elimination Round 2 | 7 | |
| 367 | Huge Strings | Codeforces | Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) | 7 | |
| 368 | Two Friends | Codeforces | Codeforces Beta Round #8 | 8 | |
| 369 | Triangles | Codeforces | Codeforces Beta Round #13 | 8 | |
| 370 | Notepad | Codeforces | Codeforces Beta Round #17 | 8 | |
| 371 | Traveling Graph | Codeforces | Codeforces Alpha Round #21 (Codeforces format) | 8 | |
| 372 | Broken robot | Codeforces | Codeforces Beta Round #24 | 8 | |
| 373 | Tickets | Codeforces | Codeforces Beta Round #26 (Codeforces format) | 8 | |
| 374 | Don't fear, DravDe is kind | Codeforces | Codeforces Beta Round #28 (Codeforces format) | 8 | |
| 375 | New Game with a Chess Piece | Codeforces | Codeforces Beta Round #36 | 8 | |
| 376 | Vasya the Architect | Codeforces | School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) | 8 | |
| 377 | Safe | Codeforces | Codeforces Beta Round #44 (Div. 2) | 8 | |
| 378 | Bombing | Codeforces | Codeforces Beta Round #47 | 8 | |
| 379 | Calendar | Codeforces | Codeforces Beta Round #54 (Div. 2) | 8 | |
| 380 | Team Arrangement | Codeforces | Codeforces Beta Round #55 (Div. 2) | 8 | |
| 381 | Dividing Island | Codeforces | Codeforces Beta Round #59 (Div. 2) | 8 | |
| 382 | Professor's task | Codeforces | Codeforces Beta Round #64 | 8 | |
| 383 | FreeDiv | Codeforces | Codeforces Beta Round #66 | 8 | |
| 384 | Password | Codeforces | Codeforces Beta Round #71 | 8 | |
| 385 | Widget Library | Codeforces | Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) | 8 | |
| 386 | Piet | Codeforces | Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) | 8 | |
| 387 | Take-off Ramps | Codeforces | Codeforces Round #101 (Div. 2) | 8 | |
| 388 | Name | Codeforces | Codeforces Round #116 (Div. 2, ACM-ICPC Rules) | 8 | |
| 389 | T-decomposition | Codeforces | Codeforces Round #147 (Div. 2) | 8 | |
| 390 | Sweets for Everyone! | Codeforces | Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) | 8 | |
| 391 | BerDonalds | Codeforces | Codeforces Round #163 (Div. 2) | 8 | |
| 392 | The Minimum Number of Variables | Codeforces | Codeforces Round #171 (Div. 2) | 8 | |
| 393 | Painting Square | Codeforces | Codeforces Round #181 (Div. 2) | 8 | |
| 394 | Olya and Graph | Codeforces | Codeforces Round #184 (Div. 2) | 8 | |
| 395 | Xenia and Dominoes | Codeforces | Codeforces Round #199 (Div. 2) | 8 | |
| 396 | Broken Monitor | Codeforces | Codeforces Round #217 (Div. 2) | 8 | |
| 397 | Sereja and Tree | Codeforces | Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) | 8 | |
| 398 | Volcanoes | Codeforces | Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) | 8 | |
| 399 | Bear and Floodlight | Codeforces | Codeforces Round #226 (Div. 2) | 8 | |
| 400 | George and Interesting Graph | Codeforces | Codeforces Round #227 (Div. 2) | 8 | |
| 401 | Inna and Sweet Matrix | Codeforces | Codeforces Round #229 (Div. 2) | 8 | |
| 402 | Tower of Hanoi | Codeforces | Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) | 8 | |
| 403 | Biathlon Track | Codeforces | Codeforces Round #242 (Div. 2) | 8 | |
| 404 | Max and Bike | Codeforces | Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) | 8 | |
| 405 | Wilbur and Trees | Codeforces | Codeforces Round #331 (Div. 2) | 8 | |
| 406 | Finals in arithmetic | Codeforces | Codeforces Round #342 (Div. 2) | 8 | |
| 407 | Labelling Cities | Codeforces | Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2) | 8 | |
| 408 | Two Melodies | Codeforces | Educational Codeforces Round 22 | 8 | |
| 409 | Map | Codeforces | Codeforces Beta Round #15 | 9 | |
| 410 | Tetragon | Codeforces | Codeforces Beta Round #23 | 9 | |
| 411 | King's Problem? | Codeforces | Codeforces Beta Round #30 (Codeforces format) | 9 | |
| 412 | Lesson Timetable | Codeforces | Codeforces Beta Round #37 | 9 | |
| 413 | Strange town | Codeforces | Codeforces Beta Round #41 | 9 | |
| 414 | Geometrical problem | Codeforces | Codeforces Beta Round #48 | 9 | |
| 415 | Writing a Song | Codeforces | Codeforces Beta Round #50 | 9 | |
| 416 | Journey | Codeforces | Codeforces Beta Round #53 | 9 | |
| 417 | Savior | Codeforces | Codeforces Beta Round #56 | 9 | |
| 418 | Wormhouse | Codeforces | Codeforces Beta Round #58 | 9 | |
| 419 | Harry Potter and the Sorting Hat | Codeforces | Codeforces Beta Round #60 | 9 | |
| 420 | Half-decay tree | Codeforces | Codeforces Beta Round #62 | 9 | |
| 421 | Solitaire | Codeforces | Codeforces Beta Round #65 (Div. 2) | 9 | |
| 422 | Hanger | Codeforces | Codeforces Beta Round #68 | 9 | |
| 423 | Archer's Shot | Codeforces | Codeforces Beta Round #70 (Div. 2) | 9 | |
| 424 | Not Quick Transformation | Codeforces | Codeforces Beta Round #88 | 9 | |
| 425 | String Transformation | Codeforces | Codeforces Beta Round #90 | 9 | |
| 426 | Frames | Codeforces | Codeforces Round #108 (Div. 2) | 9 | |
| 427 | Shoe Store | Codeforces | Codeforces Round #113 (Div. 2) | 9 | |
| 428 | Plane of Tanks: Duel | Codeforces | Codeforces Round #115 | 9 | |
| 429 | Zigzag | Codeforces | Codeforces Round #141 (Div. 2) | 9 | |
| 430 | Rats | Codeforces | Codeforces Round #155 (Div. 2) | 9 | |
| 431 | Wall Bars | Codeforces | Codeforces Round #164 (Div. 2) | 9 | |
| 432 | Shaass and Painter Robot | Codeforces | Codeforces Round #178 (Div. 2) | 9 | |
| 433 | Theft of Blueprints | Codeforces | Codeforces Round #193 (Div. 2) | 9 | |
| 434 | Game with Strings | Codeforces | Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) | 9 | |
| 435 | Physical Education and Buns | Codeforces | Codeforces Round #231 (Div. 2) | 9 | |
| 436 | Sagheer and Kindergarten | Codeforces | Codeforces Round #417 (Div. 2) | 9 | |
| 437 | Interesting Sequence | Codeforces | Codeforces Beta Round #39 | 10 | |
| 438 | Help King | Codeforces | Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) | 10 | |
| 439 | Entertaining Geodetics | Codeforces | Codeforces Beta Round #81 | 10 | |
| 440 | Looking for Owls | Codeforces | Codeforces Round #203 (Div. 2) | 10 | |
| 441 | Number of Binominal Coefficients | Codeforces | Codeforces Round #323 (Div. 1) | 10 | |
| 442 | Guards In The Storehouse | Codeforces | Educational Codeforces Round 27 | 10 | |
| 443 | The Overdosing Ubiquity | Codeforces | Codeforces Round #439 (Div. 2) | 10 |