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Codeforces Div. 2 - E Problems problems
Problem Name Online Judge Contest Difficulty Level
1 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
2 New Reform Categories Codeforces Codeforces Round #346 (Div. 2) 3
3 Sereja and Brackets Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 3
4 Enemy is weak Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
5 XOR on Segment Categories Codeforces Codeforces Round #149 (Div. 2) 4
6 Gerald and Giant Chess Categories Codeforces Codeforces Round #313 (Div. 1) & Codeforces Round #313 (Div. 2) 4
7 Propagating tree Categories Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 4
8 Ciel the Commander Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 4
9 The Values You Can Make Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 4
10 A and B and Lecture Rooms Categories Codeforces Codeforces Round #294 (Div. 2) 4
11 Paths and Trees Categories Codeforces Codeforces Round #303 (Div. 2) 4
12 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
13 Xenia and Tree Categories Codeforces Codeforces Round #199 (Div. 2) 4
14 Correct Bracket Sequence Editor Categories Codeforces Codeforces Round #350 (Div. 2) 4
15 XOR and Favorite Number Categories Codeforces Codeforces Round #340 (Div. 2) 4
16 Pashmak and Graph Categories Codeforces Codeforces Round #261 (Div. 2) 4
17 Squares and not squares Categories Codeforces Codeforces Round #451 (Div. 2) 4
18 Fire Categories Codeforces Codeforces Round #436 (Div. 2) 4
19 Fools and Roads Categories Codeforces Codeforces Round #121 (Div. 1) & Codeforces Round #121 (Div. 2) 4
20 Riding in a Lift Categories Codeforces Codeforces Round #274 (Div. 2) & Codeforces Round #274 (Div. 1) 4
21 Civilization Categories Codeforces Codeforces Round #260 (Div. 1) & Codeforces Round #260 (Div. 2) 4
22 Weakness and Poorness Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 4
23 Mashmokh and Reverse Operation Categories Codeforces Codeforces Round #240 (Div. 1) & Codeforces Round #240 (Div. 2) 5
24 Sasha and Array Categories Codeforces Codeforces Round #373 (Div. 1) & Codeforces Round #373 (Div. 2) 5
25 Cards Sorting Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #424 (Div. 2, rated, based on VK Cup Finals) 5
26 Points on Plane Categories Codeforces Codeforces Round #319 (Div. 1) & Codeforces Round #319 (Div. 2) 5
27 Polo the Penguin and XOR operation Categories Codeforces Codeforces Round #177 (Div. 1) & Codeforces Round #177 (Div. 2) 5
28 Hanoi Factory Categories Codeforces Codeforces Round #401 (Div. 2) 5
29 Sausage Maximization Categories Codeforces Codeforces Round #173 (Div. 2) 5
30 Soldier and Traveling Categories Codeforces Codeforces Round #304 (Div. 2) 5
31 Porcelain Categories Codeforces Codeforces Round #105 (Div. 2) 5
32 Read Time Categories Codeforces Codeforces Round #200 (Div. 1) & Codeforces Round #200 (Div. 2) 5
33 Pretty Song Categories Codeforces Codeforces Round #289 (Div. 2, ACM ICPC Rules) 5
34 Blood Cousins Categories Codeforces Codeforces Round #130 (Div. 2) 5
35 Three States Categories Codeforces Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) 5
36 Logo Turtle Categories Codeforces Codeforces Beta Round #96 (Div. 1) & Codeforces Beta Round #96 (Div. 2) 5
37 Array and Operations Categories Codeforces Codeforces Round #284 (Div. 1) & Codeforces Round #284 (Div. 2) 5
38 Maximize! Categories Codeforces Codeforces Round #464 (Div. 2) 5
39 Pillars Categories Codeforces Codeforces Round #271 (Div. 2) 5
40 A Simple Task Categories Codeforces Codeforces Round #312 (Div. 2) 5
41 Kalila and Dimna in the Logging Industry Categories Codeforces Codeforces Round #189 (Div. 1) & Codeforces Round #189 (Div. 2) 5
42 Wet Shark and Blocks Categories Codeforces Codeforces Round #341 (Div. 2) 5
43 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
44 Subordinates Categories Codeforces Technocup 2017 - Elimination Round 2 5
45 Iahub and Permutations Categories Codeforces Codeforces Round #198 (Div. 2) & Codeforces Round #198 (Div. 1) 5
46 Game of Stones Categories Codeforces Divide by Zero 2017 and Codeforces Round #399 (Div. 1 + Div. 2, combined) 5
47 Duff in the Army Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 5
48 Fox and Card Game Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
49 Comments Categories Codeforces Codeforces Round #387 (Div. 2) 5
50 Underground Lab Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 5
51 Subsegments Categories Codeforces Codeforces Beta Round #63 (Div. 2) 5
52 Compatible Numbers Categories Codeforces Codeforces Round #112 (Div. 2) 5
53 Number With The Given Amount Of Divisors Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 5
54 Anton and Tree Categories Codeforces Codeforces Round #379 (Div. 2) 5
55 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
56 Games with Rectangle Categories Codeforces Codeforces Beta Round #94 (Div. 1 Only) & Codeforces Beta Round #94 (Div. 2 Only) 5
57 Case of Chocolate Categories Codeforces Codeforces Round #310 (Div. 1) & Codeforces Round #310 (Div. 2) 5
58 Exposition Categories Codeforces Codeforces Beta Round #6 (Div. 2 Only) 5
59 Bitwise Formula Categories Codeforces Codeforces Round #402 (Div. 1) & Codeforces Round #402 (Div. 2) 5
60 Little Artem and Time Machine Categories Codeforces VK Cup 2016 - Round 2 5
61 Vasya and Beautiful Arrays Categories Codeforces Codeforces Round #206 (Div. 1) & Codeforces Round #206 (Div. 2) 5
62 Sereja and the Arrangement of Numbers Categories Codeforces Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) 6
63 Tree Folding Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 6
64 Vladik and cards Categories Codeforces Codeforces Round #384 (Div. 2) 6
65 Anton and Ira Categories Codeforces Codeforces Round #324 (Div. 2) 6
66 Martian Strings Categories Codeforces Codeforces Round #106 (Div. 2) 6
67 Little Pony and Summer Sun Celebration Categories Codeforces Codeforces Round #259 (Div. 1) & Codeforces Round #259 (Div. 2) 6
68 Number Transformation II Categories Codeforces Codeforces Round #201 (Div. 1) & Codeforces Round #201 (Div. 2) 6
69 Dasha and Puzzle Categories Codeforces Codeforces Round #394 (Div. 2) 6
70 Arpa’s overnight party and Mehrdad’s silent entering Categories Codeforces Codeforces Round #383 (Div. 1) & Codeforces Round #383 (Div. 2) 6
71 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
72 Fox And Dinner Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 6
73 3-cycles Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
74 Love Triangles Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 6
75 DZY Loves Colors Categories Codeforces Codeforces Round #254 (Div. 1) & Codeforces Round #254 (Div. 2) 6
76 Relay Race Categories Codeforces Codeforces Round #131 (Div. 1) & Codeforces Round #131 (Div. 2) 6
77 Police Patrol Categories Codeforces Codeforces Round #244 (Div. 2) 6
78 Mike and Geometry Problem Categories Codeforces Codeforces Round #361 (Div. 2) 6
79 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
80 Cipher Categories Codeforces Codeforces Round #110 (Div. 1) & Codeforces Round #110 (Div. 2) 6
81 Appleman and a Sheet of Paper Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 6
82 LIS of Sequence Categories Codeforces Codeforces Round #277 (Div. 2) 6
83 Zero-One Categories Codeforces Codeforces Beta Round #97 (Div. 1) & Codeforces Beta Round #97 (Div. 2) 6
84 Okabe and El Psy Kongroo Categories Codeforces Codeforces Round #420 (Div. 2) 6
85 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
86 Test Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 6
87 Sockets Categories Codeforces Codeforces Round #377 (Div. 2) 6
88 Ice cream coloring Categories Codeforces Codeforces Round #411 (Div. 1) & Codeforces Round #411 (Div. 2) 6
89 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
90 Devu and Flowers Categories Codeforces Codeforces Round #258 (Div. 2) 6
91 Sonya and Problem Wihtout a Legend Categories Codeforces Codeforces Round #371 (Div. 1) & Codeforces Round #371 (Div. 2) 6
92 Vanya and Field Categories Codeforces Codeforces Round #280 (Div. 2) 6
93 Main Sequence Categories Codeforces Codeforces Round #176 (Div. 1) & Codeforces Round #176 (Div. 2) 6
94 Vanya and Brackets Categories Codeforces Codeforces Round #308 (Div. 2) 6
95 Artem and Array Categories Codeforces Codeforces Round #253 (Div. 1) 6
96 The Holmes Children Categories Codeforces ICM Technex 2017 and Codeforces Round #400 (Div. 1 + Div. 2, combined) 6
97 Game on Tree Categories Codeforces Codeforces Round #172 (Div. 1) & Codeforces Round #172 (Div. 2) 6
98 Holes Categories Codeforces Codeforces Beta Round #13 6
99 Double Profiles Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 6
100 Mahmoud and a xor trip Categories Codeforces Codeforces Round #396 (Div. 2) 6
101 Numbers Exchange Categories Codeforces Codeforces Round #386 (Div. 2) 6
102 Lucky Subsequence Categories Codeforces Codeforces Round #104 (Div. 1) & Codeforces Round #104 (Div. 2) 6
103 Jzzhu and Apples Categories Codeforces Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) 6
104 Information Graph Categories Codeforces Codeforces Round #266 (Div. 2) 6
105 Interesting Game Categories Codeforces Codeforces Beta Round #73 (Div. 1 Only) & Codeforces Beta Round #73 (Div. 2 Only) 6
106 Lucky Permutation Categories Codeforces Codeforces Beta Round #91 (Div. 1 Only) & Codeforces Beta Round #91 (Div. 2 Only) 6
107 Restoring Increasing Sequence Categories Codeforces Codeforces Round #279 (Div. 2) 6
108 National Property Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 6
109 Arthur and Brackets Categories Codeforces Codeforces Round #288 (Div. 2) 6
110 Let's Go Rolling! Categories Codeforces School Personal Contest #1 (Winter Computer School 2010/11) - Codeforces Beta Round #38 (ACM-ICPC Rules) 6
111 GukiZ and GukiZiana Categories Codeforces Codeforces Round #307 (Div. 2) 6
112 Beautiful Decomposition Categories Codeforces Codeforces Round #171 (Div. 2) 6
113 Partial Sums Categories Codeforces Codeforces Round #138 (Div. 1) & Codeforces Round #138 (Div. 2) 6
114 Karen and Supermarket Categories Codeforces Codeforces Round #419 (Div. 1) & Codeforces Round #419 (Div. 2) 6
115 Pig and Palindromes Categories Codeforces Codeforces Round #316 (Div. 2) 6
116 Distributing Parts Categories Codeforces Codeforces Round #283 (Div. 2) 6
117 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
118 Little Elephant and LCM Categories Codeforces Codeforces Round #157 (Div. 1) & Codeforces Round #157 (Div. 2) 6
119 One-Way Reform Categories Codeforces Codeforces Round #375 (Div. 2) 6
120 Yet Another Task with Queens Categories Codeforces Codeforces Beta Round #95 (Div. 2) 6
121 Drazil and Park Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 6
122 Kefa and Watch Categories Codeforces Codeforces Round #321 (Div. 2) 6
123 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
124 Divisors Categories Codeforces Codeforces Round #256 (Div. 2) 6
125 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
126 Fish Categories Codeforces Codeforces Beta Round #16 (Div. 2 Only) 6
127 Triangles Categories Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 6
128 Prefix Product Sequence Categories Codeforces Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) & Codeforces Round #278 (Div. 2) & Codeforces Round #278 (Div. 1) 6
129 Anya and Cubes Categories Codeforces Codeforces Round #297 (Div. 2) 6
130 On Changing Tree Categories Codeforces Codeforces Round #232 (Div. 1) & Codeforces Round #232 (Div. 2) 6
131 Compartments Categories Codeforces Codeforces Round #207 (Div. 1) & Codeforces Round #207 (Div. 2) 6
132 Santa Claus and Tangerines Categories Codeforces Technocup 2017 - Elimination Round 3 6
133 Brackets in Implications Categories Codeforces Codeforces Round #306 (Div. 2) 6
134 Valera and Queries Categories Codeforces Codeforces Round #216 (Div. 2) 6
135 New Year Domino Categories Codeforces Good Bye 2014 6
136 Decoding Genome Categories Codeforces Codeforces Round #137 (Div. 2) 6
137 The Great Mixing Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 6
138 Lieges of Legendre Categories Codeforces Codeforces Round #334 (Div. 1) & Codeforces Round #334 (Div. 2) 6
139 DNA Evolution Categories Codeforces Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals) 6
140 Flawed Flow Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 6
141 Infinite Inversions Categories Codeforces Codeforces Round #301 (Div. 2) 6
142 Strictly Positive Matrix Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 6
143 Trains and Statistic Categories Codeforces Codeforces Round #353 (Div. 2) 6
144 PLEASE Categories Codeforces Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) 6
145 Time to Raid Cowavans Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 6
146 Sereja and Subsequences Categories Codeforces Codeforces Round #187 (Div. 1) & Codeforces Round #187 (Div. 2) 6
147 Caisa and Tree Categories Codeforces Codeforces Round #264 (Div. 2) 6
148 ZS and The Birthday Paradox Categories Codeforces Codeforces Round #369 (Div. 2) 6
149 The Road to Berland is Paved With Good Intentions Categories Codeforces Codeforces Round #141 (Div. 2) 6
150 Bertown roads Categories Codeforces Codeforces Beta Round #89 (Div. 2) 6
151 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
152 Little Girl and Problem on Trees Categories Codeforces Codeforces Round #169 (Div. 2) 7
153 Till I Collapse Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 7
154 President and Roads Categories Codeforces Codeforces Round #Pi (Div. 2) 7
155 Little Elephant and Shifts Categories Codeforces Codeforces Round #136 (Div. 1) & Codeforces Round #136 (Div. 2) 7
156 Famil Door and Roads Categories Codeforces Codeforces Round #343 (Div. 2) 7
157 TV Game Categories Codeforces Codeforces Beta Round #31 (Div. 2, Codeforces format) 7
158 Kleofáš and the n-thlon Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 7
159 Axis Walking Categories Codeforces Codeforces Round #191 (Div. 2) 7
160 Hack it! Categories Codeforces Codeforces Round #268 (Div. 1) & Codeforces Round #268 (Div. 2) 7
161 Fairy Categories Codeforces Codeforces Beta Round #19 7
162 Ski Base Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 7
163 Champions' League Categories Codeforces Codeforces Round #145 (Div. 2, ACM-ICPC Rules) 7
164 Paint Tree Categories Codeforces Codeforces Round #124 (Div. 1) & Codeforces Round #124 (Div. 2) 7
165 Playlist Categories Codeforces Codeforces Round #164 (Div. 2) 7
166 Levko and Strings Categories Codeforces Codeforces Round #210 (Div. 1) & Codeforces Round #210 (Div. 2) 7
167 Bindian Signalizing Categories Codeforces Codeforces Beta Round #5 7
168 Camels Categories Codeforces Codeforces Beta Round #14 (Div. 2) 7
169 Garlands Categories Codeforces Codeforces Round #368 (Div. 2) 7
170 On the Bench Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 7
171 Short Code Categories Codeforces Codeforces Round #476 (Div. 2) [Thanks, Telegram!] 7
172 Weak Memory Categories Codeforces Codeforces Round #119 (Div. 1) & Codeforces Round #119 (Div. 2) 7
173 Curious Array Categories Codeforces Codeforces Round #239 (Div. 1) & Codeforces Round #239 (Div. 2) 7
174 Bear and Square Grid Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 7
175 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
176 Bear and Company Categories Codeforces VK Cup 2017 - Round 1 7
177 Empire Strikes Back Categories Codeforces Codeforces Round #181 (Div. 2) 7
178 Alyona and towers Categories Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 7
179 Points, Lines and Ready-made Titles Categories Codeforces Technocup 2018 - Elimination Round 2 7
180 Tavas and Pashmaks Categories Codeforces Codeforces Round #299 (Div. 2) & Codeforces Round #299 (Div. 1) 7
181 Inna and Binary Logic Categories Codeforces Codeforces Round #234 (Div. 2) 7
182 Levels and Regions Categories Codeforces VK Cup 2016 - Round 3 7
183 Bear and Drawing Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 7
184 Sereja and Two Sequences Categories Codeforces Codeforces Round #243 (Div. 1) & Codeforces Round #243 (Div. 2) 7
185 Subway Innovation Categories Codeforces Codeforces Round #218 (Div. 2) 7
186 Beavermuncher-0xFF Categories Codeforces Codeforces Beta Round #69 (Div. 1 Only) & Codeforces Beta Round #69 (Div. 2 Only) 7
187 Working routine Categories Codeforces Codeforces Round #367 (Div. 2) 7
188 Sagheer and Apple Tree Categories Codeforces Codeforces Round #417 (Div. 2) 7
189 Marbles Categories Codeforces Codeforces Round #336 (Div. 1) & Codeforces Round #336 (Div. 2) 7
190 Funny Game Categories Codeforces Codeforces Round #376 (Div. 2) 7
191 World Eater Brothers Categories Codeforces Codeforces Round #148 (Div. 1) & Codeforces Round #148 (Div. 2) 7
192 Graph Cutting Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 7
193 Comb Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 7
194 Dima and Horses Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 7
195 Shortest Path Categories Codeforces Codeforces Beta Round #55 (Div. 2) 7
196 Anton and Permutation Categories Codeforces Codeforces Round #404 (Div. 2) 7
197 Splitting the Uniqueness Categories Codeforces Codeforces Round #180 (Div. 1) & Codeforces Round #180 (Div. 2) 7
198 Domino Principle Categories Codeforces Codeforces Beta Round #52 (Div. 2) 7
199 Captains Mode Categories Codeforces Codeforces Round #222 (Div. 1) & Codeforces Round #222 (Div. 2) 7
200 Prairie Partition Categories Codeforces VK Cup 2017 - Round 3 7
201 Number Transformation Categories Codeforces Codeforces Round #153 (Div. 1) & Codeforces Round #153 (Div. 2) 7
202 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
203 Bash Plays with Functions Categories Codeforces Codecraft-17 and Codeforces Round #391 (Div. 1 + Div. 2, combined) 7
204 Little Elephant and Furik and Rubik Categories Codeforces Codeforces Round #129 (Div. 1) & Codeforces Round #129 (Div. 2) 7
205 Double Happiness Categories Codeforces Codeforces Beta Round #86 (Div. 1 Only) & Codeforces Beta Round #86 (Div. 2 Only) 7
206 Arthur and Questions Categories Codeforces Codeforces Round #293 (Div. 2) 7
207 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
208 Freelancer's Dreams Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 7
209 Wooden Fence Categories Codeforces Codeforces Round #117 (Div. 2) 7
210 Build String Categories Codeforces Codeforces Round #147 (Div. 2) 7
211 The Last Fight Between Human and AI Categories Codeforces Codeforces Round #354 (Div. 2) 7
212 Remembering Strings Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 7
213 Ann and Half-Palindrome Categories Codeforces Codeforces Round #311 (Div. 2) 7
214 LRU Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 7
215 Aquarium decoration Categories Codeforces Playrix Codescapes Cup (Codeforces Round #413, rated, Div. 1 + Div. 2) 7
216 Edo and Magnets Categories Codeforces Codeforces Round #330 (Div. 1) & Codeforces Round #330 (Div. 2) 7
217 Digit Tree Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 7
218 Army Creation Categories Codeforces Educational Codeforces Round 22 7
219 Mushroom Gnomes - 2 Categories Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 7
220 Necklace Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 7
221 Devu and Birthday Celebration Categories Codeforces Codeforces Round #251 (Div. 2) 7
222 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
223 Change-free Categories Codeforces Codeforces Round #398 (Div. 2) 7
224 Petya and Spiders Categories Codeforces Codeforces Beta Round #85 (Div. 1 Only) & Codeforces Beta Round #85 (Div. 2 Only) 7
225 Vulnerable Kerbals Categories Codeforces VK Cup 2017 - Round 2 7
226 Alice, Bob, Oranges and Apples Categories Codeforces Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) 7
227 Minimum Modular Categories Codeforces Codeforces Round #183 (Div. 1) & Codeforces Round #183 (Div. 2) 7
228 George and Cards Categories Codeforces Codeforces Round #227 (Div. 2) 7
229 Product Sum Categories Codeforces Codeforces Round #344 (Div. 2) 7
230 Subset Sums Categories Codeforces Codeforces Round #202 (Div. 1) & Codeforces Round #202 (Div. 2) 7
231 Graph Reconstruction Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 7
232 Cubes Categories Codeforces Codeforces Round #116 (Div. 2, ACM-ICPC Rules) 7
233 Furlo and Rublo and Game Categories Codeforces Codeforces Round #156 (Div. 2) & Codeforces Round #156 (Div. 1) 7
234 Cyclical Quest Categories Codeforces Codeforces Round #146 (Div. 1) & Codeforces Round #146 (Div. 2) 7
235 Nikita and stack Categories Codeforces 8VC Venture Cup 2017 - Final Round 7
236 The Untended Antiquity Categories Codeforces Codeforces Round #439 (Div. 2) 7
237 Darth Vader and Tree Categories Codeforces Codeforces Round #291 (Div. 2) 7
238 Coin Troubles Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 7
239 Guess the Tree Categories Codeforces Codeforces Round #245 (Div. 1) & Codeforces Round #245 (Div. 2) 7
240 Blood Cousins Return Categories Codeforces Codeforces Round #151 (Div. 2) 7
241 Hiking Categories Codeforces Codeforces Round #277.5 (Div. 2) 7
242 Last Chance Categories Codeforces Codeforces Beta Round #98 (Div. 2) 7
243 Data Center Drama Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 7
244 Hexagons Categories Codeforces Codeforces Round #338 (Div. 2) 7
245 Divisor Tree Categories Codeforces Codeforces Round #196 (Div. 2) & Codeforces Round #196 (Div. 1) 7
246 Counter Attack Categories Codeforces Codeforces Round #120 (Div. 2) 7
247 Maxim and Matrix Categories Codeforces Codeforces Round #160 (Div. 1) & Codeforces Round #160 (Div. 2) 7
248 Mike and Friends Categories Codeforces Codeforces Round #305 (Div. 1) 8
249 The Child and Polygon Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 8
250 Yaroslav and Algorithm Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 8
251 Greedy Change Categories Codeforces Codeforces Beta Round #10 8
252 Vasya and Polynomial Categories Codeforces Codeforces Round #281 (Div. 2) 8
253 Bear in the Field Categories Codeforces Codeforces Round #226 (Div. 2) 8
254 E-reader Display Categories Codeforces Codeforces Beta Round #93 (Div. 1 Only) & Codeforces Beta Round #93 (Div. 2 Only) 8
255 Tricky and Clever Password Categories Codeforces Codeforces Beta Round #30 (Codeforces format) 8
256 Help Caretaker Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 8
257 Ultimate Weirdness of an Array Categories Codeforces Codeforces Round #352 (Div. 1) & Codeforces Round #352 (Div. 2) 8
258 Petya and Post Categories Codeforces Codeforces Beta Round #61 (Div. 2) 8
259 Vectors Categories Codeforces Codeforces Beta Round #79 (Div. 1 Only) & Codeforces Beta Round #79 (Div. 2 Only) 8
260 Dead Ends Categories Codeforces Codeforces Beta Round #49 (Div. 2) 8
261 Anniversary Categories Codeforces Codeforces Round #140 (Div. 1) & Codeforces Round #140 (Div. 2) 8
262 Vladik and Entertaining Flags Categories Codeforces Codeforces Round #416 (Div. 2) 8
263 Ilya and Two Numbers Categories Codeforces Codeforces Round #186 (Div. 2) 8
264 Misha and Palindrome Degree Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 8
265 Parade Categories Codeforces Codeforces Beta Round #35 (Div. 2) 8
266 Antichain Categories Codeforces Codeforces Round #205 (Div. 2) 8
267 Alphabet Permutations Categories Codeforces Codeforces Round #337 (Div. 2) 8
268 Dima and Magic Guitar Categories Codeforces Codeforces Round #214 (Div. 2) 8
269 Timofey and remoduling Categories Codeforces Codeforces Round #395 (Div. 1) & Codeforces Round #395 (Div. 2) 8
270 Superior Periodic Subarrays Categories Codeforces Codeforces Round #323 (Div. 1) & Codeforces Round #323 (Div. 2) 8
271 Interestring graph and Apples Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 8
272 Parking Lot Categories Codeforces Codeforces Round #135 (Div. 2) 8
273 Wizards and Numbers Categories Codeforces Codeforces Round #114 (Div. 1) & Codeforces Round #114 (Div. 2) 8
274 Printer Categories Codeforces Codeforces Round #154 (Div. 2) 8
275 Alex and Complicated Task Categories Codeforces Codeforces Round #267 (Div. 2) 8
276 Flag 2 Categories Codeforces Codeforces Beta Round #18 (Div. 2 Only) 8
277 Chip Play Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
278 Brackets Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) & Codeforces Beta Round #92 (Div. 2 Only) 8
279 Building Forest Categories Codeforces Codeforces Round #123 (Div. 2) 8
280 More Queries to Array... Categories Codeforces Codeforces Round #163 (Div. 2) 8
281 Quarrel Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 8
282 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
283 Number Table Categories Codeforces Codeforces Beta Round #39 8
284 Unsolvable Categories Codeforces Codeforces Round #139 (Div. 2) 8
285 Plumber Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 8
286 Shortest Path Problem? Categories Codeforces Educational Codeforces Round 27 8
287 Strange Sorting Categories Codeforces Codeforces Round #276 (Div. 1) & Codeforces Round #276 (Div. 2) 8
288 Collisions Categories Codeforces Codeforces Beta Round #34 (Div. 2) 8
289 Jeff and Brackets Categories Codeforces Codeforces Round #204 (Div. 1) & Codeforces Round #204 (Div. 2) 8
290 Berland collider Categories Codeforces Codeforces Beta Round #24 8
291 Vanya and Balloons Categories Codeforces Codeforces Round #355 (Div. 2) 8
292 Beautiful Set Categories Codeforces Codeforces Round #213 (Div. 1) & Codeforces Round #213 (Div. 2) 8
293 Beads Categories Codeforces Codeforces Beta Round #8 8
294 Space Rescuers Categories Codeforces Codeforces Beta Round #82 (Div. 2) 8
295 Palisection Categories Codeforces Codeforces Beta Round #17 8
296 Memory and Casinos Categories Codeforces Codeforces Round #370 (Div. 2) 8
297 Volcanoes Categories Codeforces Codeforces Round #225 (Div. 1) & Codeforces Round #225 (Div. 2) 8
298 Hamming Distance Categories Codeforces Codeforces Round #122 (Div. 1) & Codeforces Round #122 (Div. 2) 8
299 New Year Garland Categories Codeforces Codeforces Round #100 8
300 CNF 2 Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 8
301 Positions in Permutations Categories Codeforces Codeforces Round #175 (Div. 2) 8
302 Sweets Game Categories Codeforces Codeforces Beta Round #59 (Div. 2) 8
303 Start of the session Categories Codeforces Codeforces Beta Round #12 (Div 2 Only) 8
304 Exam Cheating Categories Codeforces Codeforces Round #408 (Div. 2) 8
305 Game with Strings Categories Codeforces Codeforces Round #275 (Div. 1) & Codeforces Round #275 (Div. 2) 8
306 Playing with String Categories Codeforces Codeforces Round #184 (Div. 2) 8
307 Liar Categories Codeforces Codeforces Round #422 (Div. 2) 8
308 Tree Categories Codeforces Codeforces Beta Round #23 8
309 Petya and Pipes Categories Codeforces Codeforces Round #212 (Div. 2) 8
310 Three Horses Categories Codeforces Codeforces Round #166 (Div. 2) 8
311 Maze 1D Categories Codeforces Codeforces Round #237 (Div. 2) 8
312 Competition Categories Codeforces Codeforces Round #103 (Div. 2) 8
313 Defining Macros Categories Codeforces Codeforces Beta Round #7 8
314 Martian Luck Categories Codeforces Codeforces Round #133 (Div. 2) 8
315 Very simple problem Categories Codeforces Codeforces Beta Round #51 8
316 Balance Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 8
317 The penguin's game Categories Codeforces Codeforces Round #427 (Div. 2) 8
318 Three Swaps Categories Codeforces Codeforces Round #197 (Div. 2) 8
319 Alyona and Triangles Categories Codeforces Codeforces Round #358 (Div. 2) 8
320 Common ancestor Categories Codeforces Codeforces Beta Round #46 (Div. 2) 8
321 Game Categories Codeforces Codeforces Round #170 (Div. 1) & Codeforces Round #170 (Div. 2) 8
322 Smart Cheater Categories Codeforces Codeforces Round #107 (Div. 1) & Codeforces Round #107 (Div. 2) 8
323 New Language Categories Codeforces Codeforces Round #315 (Div. 1) & Codeforces Round #315 (Div. 2) 8
324 Mishka and Divisors Categories Codeforces Codeforces Round #365 (Div. 2) 8
325 Helping People Categories Codeforces Codeforces Round #282 (Div. 1) & Codeforces Round #282 (Div. 2) 8
326 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
327 Inversions After Shuffle Categories Codeforces Codeforces Round #388 (Div. 2) 8
328 Square Tiling Categories Codeforces Codeforces Round #246 (Div. 2) 8
329 Shaass the Great Categories Codeforces Codeforces Round #178 (Div. 2) 8
330 Periodical Numbers Categories Codeforces Codeforces Round #132 (Div. 2) 8
331 Mother of Dragons Categories Codeforces Codeforces Round #428 (Div. 2) 8
332 Find a car Categories Codeforces Codeforces Round #415 (Div. 1) & Codeforces Round #415 (Div. 2) 8
333 Sleep in Class Categories Codeforces Codeforces Round #378 (Div. 2) 8
334 Colorado Potato Beetle Categories Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 8
335 Nastya and King-Shamans Categories Codeforces Codeforces Round #489 (Div. 2) 8
336 An unavoidable detour for home Categories Codeforces Codeforces Round #418 (Div. 2) 8
337 Runaway to a Shadow Categories Codeforces Codeforces Round #357 (Div. 2) 9
338 Ivan the Fool VS Gorynych the Dragon Categories Codeforces School Personal Contest #3 (Winter Computer School 2010/11) - Codeforces Beta Round #45 (ACM-ICPC Rules) 9
339 Mike and code of a permutation Categories Codeforces Codeforces Round #410 (Div. 2) 9
340 Morrowindows Categories Codeforces Codeforces Beta Round #66 9
341 Power Defence Categories Codeforces Codeforces Round #115 9
342 Dormitory Categories Codeforces Codeforces Round #155 (Div. 2) 9
343 Awards For Contestants Categories Codeforces Educational Codeforces Round 30 9
344 Evacuation Categories Codeforces Codeforces Beta Round #70 (Div. 2) 9
345 Yet Another Number Sequence Categories Codeforces Codeforces Round #230 (Div. 1) & Codeforces Round #230 (Div. 2) 9
346 Greedy Elevator Categories Codeforces Codeforces Round #159 (Div. 2) 9
347 Mushroom Gnomes Categories Codeforces Codeforces Beta Round #56 9
348 Cannon Categories Codeforces Codeforces Beta Round #44 (Div. 2) 9
349 The Last Hole! Categories Codeforces Codeforces Round #168 (Div. 1) & Codeforces Round #168 (Div. 2) 9
350 Special Graph Categories Codeforces Codeforces Round #249 (Div. 2) 9
351 Nuclear Fusion Categories Codeforces Codeforces Beta Round #65 (Div. 2) 9
352 Arrangement Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 9
353 Sandy and Nuts Categories Codeforces Codeforces Round #332 (Div. 2) 9
354 Vasya and Shifts Categories Codeforces Codeforces Round #425 (Div. 2) 9
355 Dasha and cyclic table Categories Codeforces Codeforces Round #390 (Div. 2) 9
356 Neatness Categories Codeforces Codeforces Round #209 (Div. 2) 9
357 Pentagon Categories Codeforces Codeforces Beta Round #48 9
358 Roland and Rose Categories Codeforces Codeforces Round #262 (Div. 2) 9
359 Fetch the Treasure Categories Codeforces Codeforces Round #185 (Div. 1) & Codeforces Round #185 (Div. 2) 9
360 Inna and Large Sweet Matrix Categories Codeforces Codeforces Round #229 (Div. 2) 9
361 Lucky Tickets Categories Codeforces Codeforces Round #194 (Div. 1) & Codeforces Round #194 (Div. 2) 9
362 Dividing Kingdom Categories Codeforces Codeforces Round #158 (Div. 2) 9
363 Help Greg the Dwarf Categories Codeforces Codeforces Beta Round #78 (Div. 1 Only) & Codeforces Beta Round #78 (Div. 2 Only) 9
364 Tachibana Kanade's Tofu Categories Codeforces Codeforces Round #248 (Div. 2) & Codeforces Round #248 (Div. 1) 9
365 Information Reform Categories Codeforces Codeforces Beta Round #64 9
366 Formurosa Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 9
367 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
368 Ever-Hungry Krakozyabra Categories Codeforces Codeforces Round #426 (Div. 1) & Codeforces Round #426 (Div. 2) 9
369 Berland Local Positioning System Categories Codeforces Codeforces Round #298 (Div. 2) 9
370 Tree and Array Categories Codeforces Codeforces Round #233 (Div. 1) & Codeforces Round #233 (Div. 2) 9
371 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
372 Valera and Number Categories Codeforces Codeforces Round #252 (Div. 2) 9
373 Optimal Point Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 9
374 Square Equation Roots Categories Codeforces Codeforces Beta Round #47 9
375 Black Widow Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 9
376 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
377 Binary Key Categories Codeforces Codeforces Round #193 (Div. 2) 9
378 Horse Races Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 9
379 Race Categories Codeforces Codeforces Beta Round #42 (Div. 2) 9
380 Broken Tree Categories Codeforces Codeforces Round #392 (Div. 2) 9
381 Tractor College Categories Codeforces Codeforces Round #126 (Div. 2) 9
382 Policeman and a Tree Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 9
383 Chemistry Experiment Categories Codeforces Codeforces Round #247 (Div. 2) 9
384 Circling Round Treasures Categories Codeforces Codeforces Round #221 (Div. 1) & Codeforces Round #221 (Div. 2) 9
385 Piglet's Birthday Categories Codeforces Codeforces Round #152 (Div. 2) & Codeforces Round #152 (Div. 1) 9
386 Track Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) 9
387 Choosing Carrot Categories Codeforces Tinkoff Challenge - Final Round (Codeforces Round #414, rated, Div. 1 + Div. 2) 9
388 Ksenia and Combinatorics Categories Codeforces Codeforces Round #224 (Div. 2) 9
389 Trial for Chief Categories Codeforces Codeforces Beta Round #37 9
390 Rhombus Categories Codeforces Codeforces Round #161 (Div. 2) 9
391 Transportation Categories Codeforces Codeforces Round #128 (Div. 2) 9
392 Ship's Shortest Path Categories Codeforces Codeforces Beta Round #67 (Div. 2) 9
393 Hide-and-Seek Categories Codeforces Codeforces Beta Round #32 (Div. 2, Codeforces format) 9
394 Azembler Categories Codeforces Codeforces Beta Round #76 (Div. 1 Only) & Codeforces Beta Round #76 (Div. 2 Only) 9
395 Road to Home Categories Codeforces Codeforces Round #374 (Div. 2) 9
396 Delivering Carcinogen Categories Codeforces Codeforces Round #125 (Div. 1) & Codeforces Round #125 (Div. 2) 9
397 Buses and People Categories Codeforces Codeforces Round #111 (Div. 2) 9
398 Triangles Categories Codeforces Codeforces Beta Round #15 9
399 Strange Calculation and Cats Categories Codeforces Codeforces Round #329 (Div. 2) 9
400 Mr. Kitayuta vs. Bamboos Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 9
401 Two Paths Categories Codeforces Codeforces Beta Round #36 9
402 Multithreading Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 9
403 Lucky Interval Categories Codeforces Codeforces Beta Round #84 (Div. 1 Only) 10
404 Expression Categories Codeforces Codeforces Beta Round #54 (Div. 2) 10
405 Wavy numbers Categories Codeforces Codeforces Round #273 (Div. 2) 10
406 Olympic Games Categories Codeforces Codeforces Round #235 (Div. 2) 10
407 Tree or not Tree Categories Codeforces Codeforces Beta Round #88 10
408 BCPC Categories Codeforces Codeforces Round #328 (Div. 2) 10
409 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
410 Vasily the Bear and Painting Square Categories Codeforces Codeforces Round #195 (Div. 2) 10
411 Chess Categories Codeforces Codeforces Beta Round #53 10
412 Frog Fights Categories Codeforces Codeforces Round #342 (Div. 2) 10
413 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
414 Harry Potter and Moving Staircases Categories Codeforces Codeforces Beta Round #60 10
415 Mister B and Beacons on Field Categories Codeforces Codeforces Round #421 (Div. 1) & Codeforces Round #421 (Div. 2) 10
416 Clever Fat Rat Categories Codeforces Codeforces Round #118 (Div. 1) & Codeforces Round #118 (Div. 2) 10
417 Kojiro and Furrari Categories Codeforces Codeforces Round #322 (Div. 2) 10
418 DravDe saves the world Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 10
419 Colored Jenga Categories Codeforces Codeforces Round #242 (Div. 2) 10
420 Summer Reading Categories Codeforces Codeforces Round #217 (Div. 2) 10
421 Shift It! Categories Codeforces Codeforces Beta Round #68 10
422 Helper Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 10
423 Design Tutorial: Learn from a Game Categories Codeforces Codeforces Round #270 10
424 Lift and Throw Categories Codeforces Codeforces Beta Round #81 10
425 Alternative Reality Categories Codeforces Codeforces Beta Round #90 10
426 Chain Reaction Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 10
427 World Evil Categories Codeforces Codeforces Beta Round #58 10
428 Forward, march! Categories Codeforces Codeforces Beta Round #11 10
429 MUH and Lots and Lots of Segments Categories Codeforces Codeforces Round #269 (Div. 2) 10
430 Two Circles Categories Codeforces Codeforces Round #211 (Div. 2) 10
431 Baldman and the military Categories Codeforces Codeforces Beta Round #41 10
432 DZY Loves Bridges Categories Codeforces Codeforces Round #255 (Div. 1) 10
433 Contact Categories Codeforces Codeforces Beta Round #62 10
434 Vacuum ?leaner Categories Codeforces Codeforces Beta Round #50 10
435 Inna and Babies Categories Codeforces Codeforces Round #220 (Div. 2) 10
436 Security System Categories Codeforces Codeforces Beta Round #71 10
437 Lightbulb for Minister Categories Codeforces Codeforces Round #231 (Div. 2) 10