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