You must be logged in to add problems to this category

Codeforces Div. 1, D problems
Problem Name Online Judge Contest Difficulty Level
1 Tetrahedron Categories Codeforces Codeforces Round #113 (Div. 2) 1
2 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
3 The Child and Sequence Categories Codeforces Codeforces Round #250 (Div. 1) 5
4 Little Artem and Time Machine Categories Codeforces VK Cup 2016 - Round 2 5
5 Clique in the Divisibility Graph Categories Codeforces VK Cup 2015 - Finals, online mirror 5
6 Antimatter Categories Codeforces Codeforces Round #225 (Div. 1) 5
7 Tricky Function Categories Codeforces Codeforces Round #245 (Div. 1) 5
8 Water Tree Categories Codeforces Codeforces Round #200 (Div. 1) 5
9 Tree and Queries Categories Codeforces Codeforces Round #221 (Div. 1) 5
10 Kindergarten Categories Codeforces Codeforces Round #276 (Div. 1) 6
11 Jzzhu and Numbers Categories Codeforces Codeforces Round #257 (Div. 1) 6
12 High Cry Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 6
13 Characteristics of Rectangles Categories Codeforces Codeforces Round #194 (Div. 1) 6
14 Yaroslav and Divisors Categories Codeforces Codeforces Round #182 (Div. 1) 6
15 Road Improvement Categories Codeforces Codeforces Round #302 (Div. 1) 6
16 Serega and Fun Categories Codeforces Codeforces Round #260 (Div. 1) 6
17 Towers Categories Codeforces Codeforces Round #142 (Div. 1) 6
18 Axel and Marston in Bitland Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 7
19 Mike and Fish Categories Codeforces Codeforces Round #305 (Div. 1) 7
20 Package Delivery Categories Codeforces 8VC Venture Cup 2016 - Final Round 7
21 Game with Powers Categories Codeforces Codeforces Round #188 (Div. 1) 7
22 Lizard Era: Beginning Categories Codeforces Codeforces Round #325 (Div. 1) & Codeforces Round #325 (Div. 2) 7
23 Top Secret Task Categories Codeforces Codeforces Round #327 (Div. 1) 7
24 Zip-line Categories Codeforces Codeforces Round #345 (Div. 1) 7
25 Sereja and Squares Categories Codeforces Codeforces Round #243 (Div. 1) 7
26 Iahub and Xors Categories Codeforces Codeforces Round #198 (Div. 1) 7
27 Case of a Top Secret Categories Codeforces Codeforces Round #310 (Div. 1) 7
28 Anton and School Categories Codeforces Codeforces Round #379 (Div. 2) 7
29 Nudist Beach Categories Codeforces Codeforces Round #309 (Div. 1) 7
30 Traffic Jams in the Land Categories Codeforces Codeforces Round #284 (Div. 1) 7
31 The table Categories Codeforces Codeforces Round #140 (Div. 1) 7
32 Bacterial Melee Categories Codeforces 8VC Venture Cup 2017 - Final Round 7
33 Beautiful Pairs of Numbers Categories Codeforces Codeforces Round #236 (Div. 1) 7
34 Lovely Matrix Categories Codeforces Codeforces Round #168 (Div. 1) 7
35 Fuzzy Search Categories Codeforces Codeforces Round #296 (Div. 1) 7
36 Couple Cover Categories Codeforces Educational Codeforces Round 14 7
37 Acyclic Organic Compounds Categories Codeforces Codeforces Round #333 (Div. 1) 7
38 Social Network Categories Codeforces VK Cup 2015 - Round 1 7
39 Hill Climbing Categories Codeforces Codeforces Round #238 (Div. 1) 7
40 Greg and Caves Categories Codeforces Codeforces Round #179 (Div. 1) 8
41 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
42 Animals and Puzzle Categories Codeforces Codeforces Round #371 (Div. 1) 8
43 Legen... Categories Codeforces Codeforces Round #362 (Div. 1) & Codeforces Round #362 (Div. 2) 8
44 Robot Control Categories Codeforces Codeforces Round #201 (Div. 1) 8
45 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
46 Sereja and Straight Lines Categories Codeforces Codeforces Round #187 (Div. 1) 8
47 Arpa’s letter-marked tree and Mehrdad’s Dokhtar-kosh paths Categories Codeforces Codeforces Round #383 (Div. 1) 8
48 Developing Game Categories Codeforces Codeforces Round #222 (Div. 1) 8
49 Frogs and mosquitoes Categories Codeforces Educational Codeforces Round 3 8
50 Power Tree Categories Codeforces Codeforces Round #336 (Div. 1) 8
51 k-Maximum Subsequence Sum Categories Codeforces Codeforces Round #172 (Div. 1) 8
52 New Year and Cleaning Categories Codeforces Good Bye 2015 8
53 Birthday Categories Codeforces Codeforces Round #282 (Div. 1) 8
54 Best Edge Weight Categories Codeforces Codeforces Round #423 (Div. 1, rated, based on VK Cup Finals) & Codeforces Round #423 (Div. 2, rated, based on VK Cup Finals) 8
55 Turtles Categories Codeforces Codeforces Round #202 (Div. 1) 8
56 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
57 Mashmokh and Water Tanks Categories Codeforces Codeforces Round #240 (Div. 1) 8
58 Ghd Categories Codeforces Codeforces Round #213 (Div. 1) 8
59 Kay and Eternity Categories Codeforces Codeforces Round #359 (Div. 1) 8
60 GCD Table Categories Codeforces Codeforces Round #196 (Div. 1) 8
61 Cows and Cool Sequences Categories Codeforces Codeforces Round #174 (Div. 1) 8
62 Adam and Tree Categories Codeforces Codeforces Round #253 (Div. 1) 8
63 Clues Categories Codeforces Codeforces Round #110 (Div. 1) 8
64 Instant Messanger Categories Codeforces Codeforces Round #233 (Div. 1) 8
65 Jeff and Removing Periods Categories Codeforces Codeforces Round #204 (Div. 1) 8
66 Paper task Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 8
67 Cup Trick Categories Codeforces Coder-Strike 2014 - Finals (online edition, Div. 1) & Coder-Strike 2014 - Finals (online edition, Div. 2) 8
68 Shop Categories Codeforces Codeforces Round #295 (Div. 1) 8
69 Parcels Categories Codeforces Codeforces Round #274 (Div. 1) 8
70 Sereja and Sets Categories Codeforces Codeforces Round #215 (Div. 1) 8
71 Wizard's Tour Categories Codeforces ?????????? 2018 - ?????????? ????? 1 8
72 Dividing Kingdom II Categories Codeforces Codeforces Round #360 (Div. 1) 8
73 Kingdom and its Cities Categories Codeforces Codeforces Round #339 (Div. 1) 8
74 Flights for Regular Customers Categories Codeforces Codeforces Round #319 (Div. 1) 8
75 REQ Categories Codeforces Codeforces Round #330 (Div. 1) 8
76 Little Elephant and Broken Sorting Categories Codeforces Codeforces Round #157 (Div. 1) 8
77 DZY Loves Strings Categories Codeforces Codeforces Round #254 (Div. 1) 8
78 Destiny Categories Codeforces Codeforces Round #429 (Div. 1) 8
79 Polo the Penguin and Trees Categories Codeforces Codeforces Round #177 (Div. 1) 8
80 Choosing Subtree is Fun Categories Codeforces Codeforces Round #219 (Div. 1) 8
81 Roads in Yusland Categories Codeforces Codeforces Round #352 (Div. 1) 8
82 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
83 Double Knapsack Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 8
84 Power Tower Categories Codeforces Codeforces Round #454 (Div. 1, based on Technocup 2018 Elimination Round 4) & Codeforces Round #454 (Div. 2, based on Technocup 2018 Elimination Round 4) 8
85 Interval Cubing Categories Codeforces Codeforces Round #185 (Div. 1) 8
86 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
87 Maxim and Increasing Subsequence Categories Codeforces Codeforces Round #160 (Div. 1) 8
88 Bags and Coins Categories Codeforces Codeforces Round #207 (Div. 1) 8
89 Bear and Bowling 4 Categories Codeforces Educational Codeforces Round 11 8
90 Conveyor Belts Categories Codeforces Codeforces Round #278 (Div. 1) 8
91 Board Game Categories Codeforces Codeforces Round #335 (Div. 1) 8
92 Tavas in Kansas Categories Codeforces Codeforces Round #299 (Div. 1) 9
93 Donkey and Stars Categories Codeforces Codeforces Round #152 (Div. 1) 9
94 Deputies Categories Codeforces Croc Champ 2012 - Round 1 9
95 Little Elephant and Triangle Categories Codeforces Codeforces Round #136 (Div. 1) 9
96 Nanami's Power Plant Categories Codeforces Codeforces Round #248 (Div. 1) 9
97 Mission Impassable Categories Codeforces Codeforces Round #107 (Div. 1) 9
98 Bear and Chase Categories Codeforces Codeforces Round #356 (Div. 1) 9
99 Tournament Construction Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) 9
100 Singer House Categories Codeforces Codeforces Round #424 (Div. 1, rated, based on VK Cup Finals) 9
101 Weighting a Tree Categories Codeforces Codeforces Round #453 (Div. 1) 9
102 Sign Posts Categories Codeforces Codeforces Round #315 (Div. 1) 9
103 Ruminations on Ruminants Categories Codeforces Codeforces Round #334 (Div. 1) 9
104 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
105 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
106 Fence Categories Codeforces Codeforces Round #144 (Div. 1) 9
107 Cutting a Fence Categories Codeforces VK Cup 2012 Finals (unofficial online-version) 9
108 BRT Contract Categories Codeforces Codeforces Round #119 (Div. 1) 9
109 Perishable Roads Categories Codeforces VK Cup 2017 - Round 3 9
110 Levko and Sets Categories Codeforces Codeforces Round #210 (Div. 1) 9
111 Largest Submatrix 3 Categories Codeforces Codeforces Round #239 (Div. 1) 9
112 Incorrect Flow Categories Codeforces AIM Tech Round 3 (Div. 1) 9
113 Color the Carpet Categories Codeforces Codeforces Round #180 (Div. 1) 9
114 Two Sets Categories Codeforces Codeforces Round #153 (Div. 1) 9
115 Large Refrigerator Categories Codeforces VK Cup 2012 Round 2 9
116 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
117 Flatland Fencing Categories Codeforces Codeforces Round #109 (Div. 1) 9
118 Parquet Re-laying Categories Codeforces Codeforces Round #402 (Div. 1) 9
119 Lena and Queries Categories Codeforces Educational Codeforces Round 13 9
120 On Sum of Number of Inversions in Permutations Categories Codeforces Codeforces Round #232 (Div. 1) 9
121 Limak and Shooting Points Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 9
122 Birthday Categories Codeforces AIM Tech Round (Div. 1) 9
123 Maximum Waterfall Categories Codeforces Codeforces Round #165 (Div. 1) 9
124 Big Problems for Organizers Categories Codeforces RCC 2014 Warmup (Div. 1) 9
125 T-shirt Categories Codeforces Croc Champ 2012 - Final 9
126 Little Pony and Elements of Harmony Categories Codeforces Codeforces Round #259 (Div. 1) 9
127 Metro Scheme Categories Codeforces Codeforces Round #121 (Div. 1) 9
128 Permutations Categories Codeforces Codeforces Round #382 (Div. 1) 9
129 Graph Game Categories Codeforces Codeforces Round #146 (Div. 1) 9
130 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
131 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
132 Varying Kibibits Categories Codeforces VK Cup 2017 - Round 2 9
133 Sereja and Cinema Categories Codeforces Codeforces Round #223 (Div. 1) 9
134 Superhero's Job Categories Codeforces VK Cup 2015 - Round 3 (unofficial online mirror, Div. 1 only) 9
135 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
136 Liars and Serge Categories Codeforces Codeforces Round #156 (Div. 1) 9
137 Little Elephant and Retro Strings Categories Codeforces Codeforces Round #129 (Div. 1) 9
138 Rectangles and Square Categories Codeforces MemSQL start[c]up Round 2 - online version 9
139 Timofey and a flat tree Categories Codeforces Codeforces Round #395 (Div. 1) 9
140 Huffman Coding on Segment Categories Codeforces Codeforces Round #364 (Div. 1) 9
141 Have You Ever Heard About the Word? Categories Codeforces Codeforces Round #189 (Div. 1) 9
142 Dima and Figure Categories Codeforces Codeforces Round #167 (Div. 1) 9
143 Two Segments Categories Codeforces Codeforces Round #122 (Div. 1) 9
144 Hyper String Categories Codeforces Croc Champ 2012 - Round 2 9
145 Stars Categories Codeforces Codeforces Round #131 (Div. 1) 9
146 Help Shrek and Donkey 2 Categories Codeforces Codeforces Round #102 (Div. 1) 9
147 Stranger Trees Categories Codeforces Codeforces Round #459 (Div. 1) 9
148 Tourists Categories Codeforces Codeforces Round #176 (Div. 1) 9
149 Rotatable Number Categories Codeforces Codeforces Round #183 (Div. 1) 9
150 Reclamation Categories Codeforces MemSQL start[c]up Round 1 9
151 T-Shirts Categories Codeforces Educational Codeforces Round 15 9
152 Karen and Cards Categories Codeforces Codeforces Round #419 (Div. 1) 9
153 Transferring Pyramid Categories Codeforces Codeforces Round #206 (Div. 1) 9
154 Bear and Paradox Categories Codeforces VK Cup 2016 - Round 1 9
155 Sereja and Squares Categories Codeforces Codeforces Round #187 (Div. 1) 9
156 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
157 Edge coloring of bipartite graph Categories Codeforces Educational Codeforces Round 2 9
158 Andrew and Chemistry Categories Codeforces Codeforces Round #373 (Div. 1) 9
159 Minimum Diameter Categories Codeforces VK Cup 2012 Round 3 9
160 Appleman and Complicated Task Categories Codeforces Codeforces Round #263 (Div. 1) 9
161 The Next Good String Categories Codeforces Codeforces Round #124 (Div. 1) 9
162 Random Function and Tree Categories Codeforces Codeforces Round #275 (Div. 1) 9
163 Bitonix' Patrol Categories Codeforces Codeforces Round #134 (Div. 1) 9
164 Lucky Pair Categories Codeforces Codeforces Round #104 (Div. 1) 9
165 Fox and Perfect Sets Categories Codeforces Codeforces Round #228 (Div. 1) 9
166 Randomizer Categories Codeforces Codeforces Round #313 (Div. 1) 9
167 Misha and XOR Categories Codeforces Codeforces Round #285 (Div. 1) 9
168 Ksusha and Square Categories Codeforces Croc Champ 2013 - Round 2 9
169 Visit of the Great Categories Codeforces Codeforces Round #118 (Div. 1) 9
170 Hitchhiking in the Baltic States Categories Codeforces Codeforces Round #415 (Div. 1) 9
171 Magic Breeding Categories Codeforces Codeforces Round #443 (Div. 1) 9
172 Google Code Jam Categories Codeforces Codeforces Round #170 (Div. 1) 9
173 The Evil Temple and the Moving Rocks Categories Codeforces Codeforces Round #192 (Div. 1) 9
174 Cube Snake Categories Codeforces Codeforces Round #125 (Div. 1) 10
175 Three Arrays Categories Codeforces Codeforces Round #230 (Div. 1) 10
176 Number of Binominal Coefficients Categories Codeforces Codeforces Round #323 (Div. 1) 10
177 Tennis Rackets Categories Codeforces Croc Champ 2013 - Finals (online version, Div. 1) 10
178 To Hack or not to Hack Categories Codeforces CROC 2016 - Final Round [Private, For Onsite Finalists Only] 10
179 Tree Categories Codeforces Codeforces Round #268 (Div. 1) 10
180 World of Tank Categories Codeforces Codeforces Round #467 (Div. 1) 10
181 Landmarks Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
182 Campus Categories Codeforces Codeforces Round #317 [AimFund Thanks-Round] (Div. 1) 10
183 Spider Categories Codeforces Codeforces Round #138 (Div. 1) 10
184 Bingo! Categories Codeforces MemSQL Start[c]UP 2.0 - Round 2 10
185 Shake It! Categories Codeforces Codeforces Round #431 (Div. 1) 10
186 Nephren Runs a Cinema Categories Codeforces Codeforces Round #449 (Div. 1) 10
187 Hex Dyslexia Categories Codeforces MemSQL Start[c]UP 3.0 - Round 2 (onsite finalists) 10
188 Simba on the Circle Categories Codeforces Educational Codeforces Round 4 10
189 A Creative Cutout Categories Codeforces Codeforces Round #462 (Div. 1) 10
190 Gears Categories Codeforces Codeforces Round #283 (Div. 1) 10
191 Dynamic Shortest Path Categories Codeforces AIM Tech Round 4 (Div. 1) 10
192 Mister B and Astronomers Categories Codeforces Codeforces Round #421 (Div. 1) 10
193 Sloth Categories Codeforces Codeforces Round #446 (Div. 1) 10
194 Duff in Mafia Categories Codeforces Codeforces Round #326 (Div. 1) & Codeforces Round #326 (Div. 2) 10
195 Recover a functional graph Categories Codeforces Codeforces Round #381 (Div. 1) 10
196 Tape Programming Categories Codeforces Codeforces Round #148 (Div. 1) 10
197 Rap God Categories Codeforces Codeforces Round #406 (Div. 1) 10
198 Bearish Fanpages Categories Codeforces VK Cup 2016 - Round 3 10
199 Wizards and Roads Categories Codeforces Codeforces Round #114 (Div. 1) 10
200 Symmetric Projections Categories Codeforces ?????????? 2018 - ?????????? ????? 3 10
201 Chain Reaction Categories Codeforces Codeforces Round #349 (Div. 1) & Codeforces Round #349 (Div. 2) 10
202 Cubes Categories Codeforces Codeforces Round #150 (Div. 1) 10
203 Bear and Rectangle Strips Categories Codeforces VK Cup 2017 - Round 1 10
204 Red-Black Cobweb Categories Codeforces Codeforces Round #426 (Div. 1) 10
205 Create a Maze Categories Codeforces Codeforces Round #372 (Div. 1) 10
206 DZY Loves Games Categories Codeforces Codeforces Round #255 (Div. 1) 10
207 Hongcow Draws a Circle Categories Codeforces Codeforces Round #385 (Div. 1) 10
208 Captain America Categories Codeforces Codeforces Round #366 (Div. 1) 10
209 Cut Length Categories Codeforces Educational Codeforces Round 1 10