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graphs problems
Problem Name Online Judge Year Contest Difficulty Level
1 Pouring water Categories SPOJ 1
2 Greatest K-Palindrome Substring Categories Live Archive 2008 Asia - Jakarta 1
3 NP-Hard Problem Categories Codeforces Codeforces Round #360 (Div. 1) & Codeforces Round #360 (Div. 2) 1
4 New Year Transportation Categories Codeforces Good Bye 2014 1
5 The Dueling Philosophers Problem Categories Live Archive 2012 North America - Mid-Atlantic USA 1
6 Easy Problem from Rujia Liu? Categories UVA 1
7 Party Categories Codeforces Codeforces Beta Round #87 (Div. 1 Only) & Codeforces Beta Round #87 (Div. 2 Only) 1
8 Road Construction Categories Codeforces Codeforces Round #192 (Div. 2) 1
9 Hotels Along the Croatian Coast Categories SPOJ 1
10 Luggage Categories UVA 1
11 Two Buttons Categories Codeforces Codeforces Round #295 (Div. 2) 1
12 Network Connections Categories UVA 1
13 Binary Numbers Categories TJU 1
14 A Node Too Far Categories UVA 1
15 Travel Categories TJU 1
16 The Decoder Categories UVA 1
17 Ice Skating Categories Codeforces Codeforces Round #134 (Div. 1) & Codeforces Round #134 (Div. 2) 1
18 Graph Connectivity Categories UVA 1
19 Dijkstra? Categories Codeforces Codeforces Alpha Round #20 (Codeforces format) 1
20 Bakery Categories Codeforces Codeforces Round #368 (Div. 2) 1
21 Searching the Graph Categories SPOJ 1
22 Young Physicist Categories Codeforces Codeforces Beta Round #63 (Div. 2) 1
23 Reposts Categories Codeforces VK Cup 2015 - Qualification Round 1 2
24 Matrix Transpose Categories UVA 2
25 The Two Routes Categories Codeforces Codeforces Round #333 (Div. 1) & Codeforces Round #333 (Div. 2) 2
26 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
27 True Friends Categories SPOJ 2
28 The Child and Toy Categories Codeforces Codeforces Round #250 (Div. 2) & Codeforces Round #250 (Div. 1) 2
29 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
30 Strongly Connected City Categories Codeforces Bayan 2015 Contest Warm Up 2
31 Fox And Names Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 2
32 New Year Permutation Categories Codeforces Good Bye 2014 2
33 Numbering Paths Categories UVA 2
34 Topological Sorting Categories Timus 2
35 Checkposts Categories Codeforces Codeforces Round #244 (Div. 2) 2
36 Catenyms Categories PKU 2
37 05-2 Rendezvous Categories UVA 2
38 Mr. Kitayuta's Colorful Graph Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
39 Colorful Graph Categories Codeforces Codeforces Round #151 (Div. 2) 3
40 Cthulhu Categories Codeforces Codeforces Beta Round #80 (Div. 1 Only) & Codeforces Beta Round #80 (Div. 2 Only) 3
41 Unbearable Controversy of Being Categories Codeforces Codeforces Round #277.5 (Div. 2) 3
42 Network Topology Categories Codeforces Croc Champ 2013 - Round 1 3
43 Wedding of Sultan Categories UVA 3
44 Longtail Hedgehog Categories Codeforces Codeforces Round #338 (Div. 2) 3
45 Ping-Pong (Easy Version) Categories Codeforces Codeforces Round #189 (Div. 2) 3
46 Greg and Graph Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 3
47 Two Rounds Categories Timus 3
48 Misha and Forest Categories Codeforces Codeforces Round #285 (Div. 2) & Codeforces Round #285 (Div. 1) 3
49 Cryptography Categories A2 Online Judge 3
50 Graph and String Categories Codeforces AIM Tech Round (Div. 1) & AIM Tech Round (Div. 2) 3
51 Going in Cycle!! Categories UVA 3
52 Journey Categories Codeforces Codeforces Round #374 (Div. 2) 3
53 Searching for Graph Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 3
54 New Reform Categories Codeforces Codeforces Round #346 (Div. 2) 3
55 Students and Shoelaces Categories Codeforces Codeforces Beta Round #94 (Div. 2 Only) 3
56 AlmostBipartiteMatching Categories TopCoder TCCC06 Wildcard - Div1 easy] (10135) 3
57 As Long as I Learn, I Live Categories UVA 3
58 Gargari and Permutations Categories Codeforces Codeforces Round #264 (Div. 2) 3
59 Valera and Elections Categories Codeforces Codeforces Round #216 (Div. 2) 3
60 Football Categories Codeforces RCC 2014 Warmup (Div. 2) & RCC 2014 Warmup (Div. 1) 3
61 Hongcow Builds A Nation Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 3
62 Gincana Categories SPOJ Brazil 4
63 Graph Cut Categories SPOJ 4
64 Ivan's Car Categories Timus 4
65 Two Companies Categories CodeChef 4
66 Instant View of Big Bang Categories UVA 4
67 Destroying Roads Categories Codeforces Codeforces Round #302 (Div. 1) & Codeforces Round #302 (Div. 2) 4
68 King's Path Categories Codeforces Codeforces Round #149 (Div. 2) 4
69 Lazy Student Categories Codeforces Codeforces Round #335 (Div. 1) & Codeforces Round #335 (Div. 2) 4
70 Garland Categories Codeforces Codeforces Round #398 (Div. 2) 4
71 Dorm Water Supply Categories Codeforces Codeforces Beta Round #83 (Div. 1 Only) & Codeforces Beta Round #83 (Div. 2 Only) 4
72 The Explosion Categories SPOJ 4
73 The Forrest for the Trees Categories Live Archive 1997 North America - Greater NY 4
74 Paths and Trees Categories Codeforces Codeforces Round #303 (Div. 2) 4
75 Dream Categories UVA 4
76 Road Map Categories Codeforces Codeforces Beta Round #34 (Div. 2) 4
77 Simple Dijkstras algorithm Categories SPOJ 4
78 Ring road Categories Codeforces Codeforces Beta Round #24 4
79 Restore Graph Categories Codeforces Codeforces Round #237 (Div. 2) 4
80 Alyona and a tree Categories Codeforces Codeforces Round #381 (Div. 1) & Codeforces Round #381 (Div. 2) 4
81 Directed Roads Categories Codeforces Codeforces Round #369 (Div. 2) 4
82 New Year Santa Network Categories Codeforces Good Bye 2014 4
83 Eternal Victory Categories Codeforces Codeforces Beta Round #57 (Div. 2) 4
84 Jzzhu and Cities Categories Codeforces Codeforces Round #257 (Div. 1) & Codeforces Round #257 (Div. 2) 4
85 Roads in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
86 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
87 Regular Bridge Categories Codeforces Codeforces Round #306 (Div. 2) 4
88 Cow Program Categories Codeforces Codeforces Round #174 (Div. 1) & Codeforces Round #174 (Div. 2) 4
89 Union of Doubly Linked Lists Categories Codeforces 2017-2018 ACM-ICPC, NEERC, Southern Subregional Contest, qualification stage (Online Mirror, ACM-ICPC Rules, Teams Preferred) 4
90 Reachability from the Capital Categories Codeforces Codeforces Round #490 (Div. 3) 4
91 Subway Categories Codeforces Codeforces Beta Round #95 (Div. 2) 4
92 Resort Categories Codeforces Codeforces Round #203 (Div. 2) 4
93 The Scrooge Co Problem Categories UVA 4
94 Roads not only in Berland Categories Codeforces Codeforces Beta Round #25 (Div. 2 Only) 4
95 Mahmoud and a Dictionary Categories Codeforces Codeforces Round #396 (Div. 2) 5
96 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
97 Dungeons and Candies Categories Codeforces Zepto Code Rush 2014 5
98 Weird journey Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 5
99 Dima and Bacteria Categories Codeforces Codeforces Round #234 (Div. 2) 5
100 Breaking Good Categories Codeforces Codeforces Round #287 (Div. 2) 5
101 Volleyball Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) & Codeforces Beta Round #77 (Div. 2 Only) 5
102 Inna and Dima Categories Codeforces Codeforces Round #220 (Div. 2) 5
103 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
104 Block Tower Categories Codeforces Codeforces Round #191 (Div. 2) 5
105 Cycles Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 5
106 Complete The Graph Categories Codeforces Codeforces Round #372 (Div. 1) & Codeforces Round #372 (Div. 2) 5
107 A Simple Task Categories Codeforces Codeforces Beta Round #11 5
108 Minimum spanning tree for each edge Categories Codeforces Educational Codeforces Round 3 5
109 Cycle in Graph Categories Codeforces Codeforces Round #161 (Div. 2) 5
110 Three States Categories Codeforces Codeforces Round #327 (Div. 1) & Codeforces Round #327 (Div. 2) 5
111 Graph Coloring Categories Live Archive 1995 Europe - Southwestern 5
112 Robot Rapping Results Report Categories Codeforces CROC 2016 - Elimination Round 5
113 pSort Categories Codeforces Codeforces Beta Round #28 (Codeforces format) 5
114 Two Paths Categories Codeforces Codeforces Beta Round #14 (Div. 2) 5
115 Vitaly and Cycle Categories Codeforces Codeforces Round #311 (Div. 2) 5
116 Yaroslav and Time Categories Codeforces Codeforces Round #182 (Div. 1) & Codeforces Round #182 (Div. 2) 5
117 Obsession with Robots Categories Codeforces Codeforces Beta Round #8 5
118 Help General Categories Codeforces Codeforces Round #102 (Div. 1) & Codeforces Round #102 (Div. 2) 5
119 Cycle Categories Codeforces Codeforces Beta Round #88 5
120 Mail Stamps Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 5
121 Missile Silos Categories Codeforces Codeforces Round #103 (Div. 2) 5
122 Bertown roads Categories Codeforces Codeforces Beta Round #89 (Div. 2) 6
123 Love Triangles Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 6
124 World Tour Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 6
125 Military patrol Categories SPOJ 6
126 Flawed Flow Categories Codeforces Codeforces Round #165 (Div. 1) & Codeforces Round #165 (Div. 2) 6
127 Tanya and Password Categories Codeforces Codeforces Round #288 (Div. 2) 6
128 3-cycles Categories Codeforces Codeforces Beta Round #40 (Div. 2) 6
129 A Pair of Graphs Categories Live Archive 2008 Asia - Hangzhou 6
130 Fedor and Essay Categories Codeforces Codeforces Round #267 (Div. 2) 6
131 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
132 Vanya and Treasure Categories Codeforces Codeforces Round #355 (Div. 2) 6
133 Police Station Categories Codeforces Codeforces Round #130 (Div. 2) 6
134 System Administrator Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 6
135 Strictly Positive Matrix Categories Codeforces Codeforces Round #236 (Div. 2) & Codeforces Round #236 (Div. 1) 6
136 Leha and another game about graph Categories Codeforces Codeforces Round #429 (Div. 1) & Codeforces Round #429 (Div. 2) 6
137 Dispute Categories Codeforces Codeforces Round #149 (Div. 2) 6
138 Party Categories Codeforces Codeforces Beta Round #23 6
139 Shortest Path Categories A2 Online Judge 6
140 Ring Road 2 Categories Codeforces Codeforces Beta Round #27 (Codeforces format, Div. 2) 6
141 In Defence of a Garden Categories Live Archive 2002 North America - Mid-Atlantic USA 6
142 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
143 Greg and Friends Categories Codeforces Codeforces Round #179 (Div. 1) & Codeforces Round #179 (Div. 2) 6
144 CompilingDecksWithJokers Categories TopCoder SRM 380 - Div1 medium - Div2 hard] (10802) 6
145 Hydra Categories Codeforces Codeforces Round #150 (Div. 1) & Codeforces Round #150 (Div. 2) 6
146 Information Graph Categories Codeforces Codeforces Round #266 (Div. 2) 6
147 Double Profiles Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 6
148 The Great Mixing Categories Codeforces Codeforces Round #407 (Div. 1) & Codeforces Round #407 (Div. 2) 6
149 The Road to Berland is Paved With Good Intentions Categories Codeforces Codeforces Round #141 (Div. 2) 6
150 Increasing Shortest Path Categories A2 Online Judge 6
151 Polycarp and Hay Categories Codeforces Codeforces Round #346 (Div. 2) 6
152 Sereja and the Arrangement of Numbers Categories Codeforces Codeforces Round #215 (Div. 1) & Codeforces Round #215 (Div. 2) 6
153 Vladik and Favorite Game Categories Codeforces Codeforces Round #416 (Div. 2) 6
154 Partial Teacher Categories Codeforces Manthan 2011 6
155 Table Compression Categories Codeforces Codeforces Round #345 (Div. 1) & Codeforces Round #345 (Div. 2) 6
156 Mr. Kitayuta's Technology Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 6
157 Color the Map Categories Live Archive 2004 Asia - Ehime 6
158 Legacy Categories Codeforces Codeforces Round #406 (Div. 1) & Codeforces Round #406 (Div. 2) 6
159 Join two kingdoms Categories UVA 6
160 Party Categories Codeforces ABBYY Cup 2.0 - Easy 6
161 Triangles Categories Codeforces Codeforces Round #142 (Div. 1) & Codeforces Round #142 (Div. 2) 6
162 Edges in MST Categories Codeforces Codeforces Round #111 (Div. 2) 7
163 Pursuit For Artifacts Categories Codeforces Educational Codeforces Round 10 7
164 Cactus Categories Codeforces Codeforces Round #143 (Div. 2) 7
165 Ant Man Categories Codeforces Codeforces Round #366 (Div. 1) & Codeforces Round #366 (Div. 2) 7
166 Nudist Beach Categories Codeforces Codeforces Round #309 (Div. 1) 7
167 Data Center Drama Categories Codeforces Codeforces Round #296 (Div. 2) & Codeforces Round #296 (Div. 1) 7
168 Black and White Tree Categories Codeforces Codeforces Round #158 (Div. 2) 7
169 Build String Categories Codeforces Codeforces Round #147 (Div. 2) 7
170 Variable, or There and Back Again Categories Codeforces VK Cup 2012 Round 3 7
171 Knights Categories Codeforces Codeforces Beta Round #33 (Codeforces format) 7
172 Bear and Forgotten Tree 2 Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 7
173 Fools and Foolproof Roads Categories Codeforces Codeforces Round #212 (Div. 2) 7
174 Dima and Horses Categories Codeforces Codeforces Round #167 (Div. 2) & Codeforces Round #167 (Div. 1) 7
175 Ralph and Mushrooms Categories Codeforces Codeforces Round #447 (Div. 2) 7
176 Lucky Country Categories Codeforces Codeforces Beta Round #77 (Div. 1 Only) 7
177 Chessboard Billiard Categories Codeforces Codeforces Beta Round #68 7
178 Bug in Code Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) & Coder-Strike 2014 - Finals (online edition, Div. 1) 7
179 Envy Categories Codeforces Codeforces Round #446 (Div. 1) & Codeforces Round #446 (Div. 2) 7
180 Case of Computer Network Categories Codeforces Codeforces Round #310 (Div. 1) 7
181 Valera and Swaps Categories Codeforces Codeforces Round #252 (Div. 2) 7
182 Snake Categories Codeforces Codeforces Round #139 (Div. 2) 7
183 Shortest Path Categories Codeforces Codeforces Beta Round #55 (Div. 2) 7
184 Non-Stop Travel Categories Live Archive 1995 North America - North Central NA 7
185 Mike and Fish Categories Codeforces Codeforces Round #305 (Div. 1) 7
186 Lovely Matrix Categories Codeforces Codeforces Round #168 (Div. 1) 7
187 Okabe and City Categories Codeforces Codeforces Round #420 (Div. 2) 7
188 Gift Categories Codeforces All-Ukrainian School Olympiad in Informatics 7
189 Counter Attack Categories Codeforces Codeforces Round #120 (Div. 2) 7
190 Ksenia and Pawns Categories Codeforces Codeforces Round #224 (Div. 2) 7
191 Graph Cutting Categories Codeforces Codeforces Round #238 (Div. 2) & Codeforces Round #238 (Div. 1) 7
192 Square Root of Permutation Categories Codeforces Educational Codeforces Round 4 7
193 Wrong Floyd Categories Codeforces Codeforces Round #203 (Div. 2) 7
194 Idempotent functions Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 7
195 Ski Base Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) & Codeforces Beta Round #75 (Div. 2 Only) 7
196 President's Path Categories Codeforces Codeforces Round #241 (Div. 2) 7
197 Graph Reconstruction Categories Codeforces Codeforces Round #192 (Div. 1) & Codeforces Round #192 (Div. 2) 7
198 President and Roads Categories Codeforces Codeforces Round #Pi (Div. 2) 7
199 Three-dimensional Turtle Super Computer Categories Codeforces VK Cup 2016 - Qualification Round 2 7
200 Tournament Categories Codeforces Codeforces Round #443 (Div. 1) & Codeforces Round #443 (Div. 2) 8
201 T-decomposition Categories Codeforces Codeforces Round #147 (Div. 2) 8
202 Quarrel Categories Codeforces Codeforces Beta Round #29 (Div. 2, Codeforces format) 8
203 Swaps Categories Codeforces Codeforces Testing Round #3 8
204 Traveling Graph Categories Codeforces Codeforces Alpha Round #21 (Codeforces format) 8
205 CNF 2 Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) & Codeforces Round #317 [AimFund Thanks-Round] (Div. 2) 8
206 Vladik and Entertaining Flags Categories Codeforces Codeforces Round #416 (Div. 2) 8
207 Scheme Categories Codeforces Codeforces Beta Round #22 (Div. 2 Only) 8
208 FreeDiv Categories Codeforces Codeforces Beta Round #66 8
209 Tickets Categories Codeforces Codeforces Beta Round #26 (Codeforces format) 8
210 Smile House Categories Codeforces Codeforces Testing Round #4 8
211 In Defence of a Garden Categories PKU 8
212 Interestring graph and Apples Categories Codeforces Codeforces Beta Round #9 (Div. 2 Only) 8
213 Guard Towers Categories Codeforces Yandex.Algorithm 2011 Round 1 8
214 Take-off Ramps Categories Codeforces Codeforces Round #101 (Div. 2) 8
215 Sereja and Tree Categories Codeforces Codeforces Round #223 (Div. 1) & Codeforces Round #223 (Div. 2) 8
216 Trails and Glades Categories Codeforces VK Cup 2012 Finals, Practice Session 8
217 MST Company Categories Codeforces Codeforces Testing Round #2 8
218 Widget Library Categories Codeforces Codeforces Beta Round #74 (Div. 1 Only) & Codeforces Beta Round #74 (Div. 2 Only) 8
219 Petya and Pipes Categories Codeforces Codeforces Round #212 (Div. 2) 8
220 Clearing Up Categories Codeforces Codeforces Round #101 (Div. 2) 8
221 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
222 BerDonalds Categories Codeforces Codeforces Round #163 (Div. 2) 8
223 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
224 Suggested Friends Categories Codeforces CROC-MBTU 2012, Elimination Round (ACM-ICPC) 8
225 Tourists Categories Codeforces Codeforces Round #278 (Div. 1) 8
226 Points and Segments Categories Codeforces Codeforces Round #245 (Div. 1) 8
227 Clues Categories Codeforces Codeforces Round #110 (Div. 1) 8
228 Kingdom and its Cities Categories Codeforces Codeforces Round #339 (Div. 1) 8
229 Playing on Graph Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 8
230 Dominoes Categories Codeforces Codeforces Testing Round #5 8
231 Flights Categories Codeforces Bayan 2012-2013 Elimination Round (ACM ICPC Rules, English statements) 8
232 Balance Categories Codeforces Codeforces Round #188 (Div. 1) & Codeforces Round #188 (Div. 2) 8
233 Mother of Dragons Categories Codeforces Codeforces Round #428 (Div. 2) 8
234 Beads Categories Codeforces Codeforces Beta Round #8 8
235 Graph basics concepts Categories SPOJ 8
236 Opening Portals Categories Codeforces Codeforces Round #124 (Div. 1) 8
237 Track Categories Codeforces Codeforces Beta Round #72 (Div. 1 Only) & Codeforces Beta Round #72 (Div. 2 Only) 9
238 Pairs Categories Codeforces Yandex.Algorithm Open 2011 Qualification 1 9
239 DFS Categories Codeforces Lyft Level 5 Challenge 2018 - Final Round 9
240 Pentagon Categories Codeforces Codeforces Beta Round #48 9
241 Levko and Game Categories Codeforces Codeforces Round #210 (Div. 1) 9
242 Big Problems for Organizers Categories Codeforces RCC 2014 Warmup (Div. 1) 9
243 Theft of Blueprints Categories Codeforces Codeforces Round #193 (Div. 2) 9
244 Maze Categories Codeforces Codeforces Beta Round #92 (Div. 1 Only) 9
245 Caterpillar Categories Codeforces Codeforces Beta Round #48 9
246 The Classic Problem Categories Codeforces Codeforces Round #265 (Div. 1) 9
247 Battlefield Categories Codeforces Codeforces Round #117 (Div. 2) 9
248 Garden Categories Codeforces Codeforces Round #108 (Div. 2) 9
249 Travelling Through the Snow Queen's Kingdom Categories Codeforces Codeforces Round #359 (Div. 1) 9
250 Meeting Her Categories Codeforces Codeforces Round #148 (Div. 1) 9
251 Mike and code of a permutation Categories Codeforces Codeforces Round #410 (Div. 2) 9
252 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
253 Winning Strategy Categories Codeforces Yandex.Algorithm 2011 Finals 9
254 Hercule Poirot Problem Categories Codeforces School Personal Contest #2 (Winter Computer School 2010/11) - Codeforces Beta Round #43 (ACM-ICPC Rules) 9
255 Road Repairs Categories Codeforces Codeforces Round #145 (Div. 1, ACM-ICPC Rules) 9
256 Sagheer and Kindergarten Categories Codeforces Codeforces Round #417 (Div. 2) 9
257 Two Paths Categories Codeforces Codeforces Beta Round #36 9
258 Wilbur and Strings Categories Codeforces Codeforces Round #331 (Div. 2) 9
259 Mister B and Flight to the Moon Categories Codeforces Codeforces Round #421 (Div. 1) 9
260 Evacuation Categories Codeforces Codeforces Beta Round #70 (Div. 2) 9
261 Metro Scheme Categories Codeforces Codeforces Round #121 (Div. 1) 9
262 Cycling City Categories Codeforces Codeforces Round #295 (Div. 1) 9
263 Graph Game Categories Codeforces Codeforces Round #146 (Div. 1) 9
264 Game with Points Categories Codeforces Testing Round #9 9
265 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
266 Dima and Kicks Categories Codeforces Codeforces Round #208 (Div. 2) 9
267 Grocer's Problem Categories Codeforces Codeforces Beta Round #75 (Div. 1 Only) 9
268 Trial for Chief Categories Codeforces Codeforces Beta Round #37 9
269 Wormhouse Categories Codeforces Codeforces Beta Round #58 9
270 Edge coloring of bipartite graph Categories Codeforces Educational Codeforces Round 2 9
271 Greedy Petya Categories Codeforces April Fools Day Contest 2013 10
272 Deja Vu Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
273 Spider Categories Codeforces Codeforces Round #138 (Div. 1) 10
274 Restore the Tree Categories Codeforces Codeforces Round #440 (Div. 1, based on Technocup 2018 Elimination Round 2) 10
275 The Overdosing Ubiquity Categories Codeforces Codeforces Round #439 (Div. 2) 10
276 Planar Graph Categories Codeforces Codeforces Round #138 (Div. 1) 10
277 ALT Categories Codeforces Codeforces Round #406 (Div. 1) 10
278 Baldman and the military Categories Codeforces Codeforces Beta Round #41 10
279 Road Problem Categories Codeforces School Team Contest #3 (Winter Computer School 2010/11) 10
280 Bear and Chemistry Categories Codeforces VK Cup 2016 - Round 1 10
281 Chain Letter Categories Codeforces Friday the 13th, Programmers Day 10
282 Island Puzzle Categories Codeforces 8VC Venture Cup 2016 - Final Round 10
283 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
284 Doe Graphs Categories Codeforces Codeforces Round #144 (Div. 1) & Codeforces Round #144 (Div. 2) 10
285 BerPaint Categories Codeforces School Team Contest #2 (Winter Computer School 2010/11) 10
286 Privatization Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 10
287 Gnomes of Might and Magic Categories Codeforces Codeforces Round #115 10
288 Escaping on Beaveractor Categories Codeforces ABBYY Cup 3.0 - Finals (online version) 10
289 Leaders Categories Codeforces Yandex.Algorithm 2011 Finals 10
290 Dynamic Programming Categories A2 Online Judge 10