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Best Problem Setters problems
Problem Name Online Judge Contest Difficulty Level
1 Olympiad Categories Codeforces Codeforces Round #467 (Div. 2) 1
2 Drazil and Factorial Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 1
3 Launch of Collider Categories Codeforces Codeforces Round #363 (Div. 2) 1
4 Fox And Snake Categories Codeforces Codeforces Round #290 (Div. 2) 1
5 Fox and Number Game Categories Codeforces Codeforces Round #228 (Div. 2) 1
6 Bear and Big Brother Categories Codeforces Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) 1
7 Petr and Book Categories Codeforces Codeforces Beta Round #99 (Div. 2) 1
8 Cells Not Under Attack Categories Codeforces Codeforces Round #364 (Div. 2) 1
9 Kyoya and Photobooks Categories Codeforces Codeforces Round #309 (Div. 2) 1
10 Appleman and Easy Task Categories Codeforces Codeforces Round #263 (Div. 2) 1
11 New Year and Hurry Categories Codeforces Good Bye 2016 1
12 Appleman and Toastman Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 1
13 Minimum Difficulty Categories Codeforces Codeforces Round #283 (Div. 2) 1
14 Bear and Elections Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
15 Bear and Poker Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
16 Quasi Binary Categories Codeforces Codeforces Round #300 1
17 Vacations Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 1
18 Raising Bacteria Categories Codeforces Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 1
19 New Year and Counting Cards Categories Codeforces Good Bye 2017 1
20 Dreamoon and WiFi Categories Codeforces Codeforces Round #272 (Div. 2) 1
21 Roadside Trees (Simplified Edition) Categories Codeforces Codeforces Round #162 (Div. 2) 1
22 Hongcow Learns the Cyclic Shift Categories Codeforces Codeforces Round #385 (Div. 2) 1
23 Two Buttons Categories Codeforces Codeforces Round #295 (Div. 2) 1
24 Trip For Meal Categories Codeforces Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 1
25 Christmas Spruce Categories Codeforces Hello 2018 1
26 Bear and Finding Criminals Categories Codeforces Codeforces Round #356 (Div. 2) 1
27 Free Ice Cream Categories Codeforces Codeforces Round #359 (Div. 2) 1
28 Design Tutorial: Learn from Math Categories Codeforces Codeforces Round #270 1
29 Classroom Watch Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 1
30 Dreamoon and Stairs Categories Codeforces Codeforces Round #272 (Div. 2) 1
31 Colorful Stones (Simplified Edition) Categories Codeforces Codeforces Round #162 (Div. 2) 1
32 Pangram Categories Codeforces Codeforces Round #295 (Div. 2) 1
33 I_love_\%username\% Categories Codeforces Codeforces Round #109 (Div. 2) 1
34 Modular Exponentiation Categories Codeforces Hello 2018 1
35 Bear and Five Cards Categories Codeforces Codeforces Round #356 (Div. 2) 1
36 New Year and Days Categories Codeforces Good Bye 2015 1
37 Fraction Categories Codeforces Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 1
38 Andryusha and Socks Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 1
39 Drazil and Date Categories Codeforces Codeforces Round #292 (Div. 2) 1
40 New Year and North Pole Categories Codeforces Good Bye 2016 1
41 Bear and Three Balls Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 2
42 Vicious Keyboard Categories Codeforces Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) 2
43 New Year and Curling Categories Codeforces Good Bye 2017 2
44 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
45 Counting Kangaroos is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 2
46 Link/Cut Tree Categories Codeforces Codeforces Round #339 (Div. 2) 2
47 Fox and Box Accumulation Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 2
48 Bark to Unlock Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 2
49 Code obfuscation Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 2
50 Petr and a calendar Categories Codeforces Codeforces Round #393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition) 2
51 Tourist's Notes Categories Codeforces Codeforces Round #300 2
52 Is it rated? Categories Codeforces Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3) 2
53 Fox And Names Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 2
54 Bear and Different Names Categories Codeforces VK Cup 2017 - Round 1 2
55 Design Tutorial: Make It Nondeterministic Categories Codeforces Codeforces Round #270 2
56 New Year and Buggy Bot Categories Codeforces Good Bye 2017 2
57 Kyoya and Colored Balls Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 2
58 Escape from Stones Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 2
59 Ciel and Flowers Categories Codeforces Codeforces Round #190 (Div. 2) 2
60 Removing Columns Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 2
61 Neverending competitions Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 2
62 Divisiblity of Differences Categories Codeforces Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 2
63 Arpa and a research in Mexican wave Categories Codeforces Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 2
64 Bear and Game Categories Codeforces Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition) 2
65 Drazil and His Happy Friends Categories Codeforces Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) & Codeforces Round #292 (Div. 2) 2
66 Santa Claus and a Place in a Class Categories Codeforces Technocup 2017 - Elimination Round 3 2
67 New Year and Domino Categories Codeforces Good Bye 2015 2
68 Little Robber Girl's Zoo Categories Codeforces Codeforces Round #359 (Div. 2) 2
69 Bear and Friendship Condition Categories Codeforces VK Cup 2017 - Round 1 2
70 Design Tutorial: Learn from Life Categories Codeforces Codeforces Round #270 2
71 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
72 Andryusha and Colored Balloons Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 2
73 Guess the Permutation Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 2
74 Ciel and Dancing Categories Codeforces Codeforces Round #190 (Div. 2) 2
75 Combination Categories Codeforces Codeforces Round #109 (Div. 2) 2
76 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
77 Cutting Banner Categories Codeforces Codeforces Round #300 2
78 New Year and Old Property Categories Codeforces Good Bye 2015 2
79 Jumping Ball Categories Codeforces Canada Cup 2016 2
80 Maxim Buys an Apartment Categories Codeforces Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 2
81 Mr. Kitayuta's Gift Categories Codeforces Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) & Codeforces Round #286 (Div. 2) 2
82 New Year and Rating Categories Codeforces Good Bye 2016 2
83 Slime Combining Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 2
84 Valued Keys Categories Codeforces Codeforces Round #409 (rated, Div. 2, based on VK Cup 2017 Round 2) 2
85 Bear and Displayed Friends Categories Codeforces VK Cup 2016 - Round 1 2
86 One Bomb Categories Codeforces Codeforces Round #363 (Div. 2) 2
87 Fox And Two Dots Categories Codeforces Codeforces Round #290 (Div. 2) 2
88 Gena's Code Categories Codeforces Codeforces Round #339 (Div. 2) 2
89 Fox and Cross Categories Codeforces Codeforces Round #228 (Div. 2) 2
90 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
91 Vile Grasshoppers Categories Codeforces Codeforces Round #467 (Div. 2) 2
92 Planning Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 2
93 Table Tennis Game 2 Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 2
94 Bear and Prime 100 Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 2
95 They Are Everywhere Categories Codeforces Codeforces Round #364 (Div. 2) 2
96 Ohana Cleans Up Categories Codeforces Codeforces Round #309 (Div. 2) 2
97 Collecting Beats is Fun Categories Codeforces Codeforces Round #219 (Div. 2) 2
98 Appleman and Card Game Categories Codeforces Codeforces Round #263 (Div. 2) 2
99 Secret Combination Categories Codeforces Codeforces Round #283 (Div. 2) 3
100 Good Sequences Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 3
101 Tennis Tournament Categories Codeforces Educational Codeforces Round 8 3
102 Voltage Keepsake Categories Codeforces VK Cup 2017 - Round 2 3
103 Save Energy! Categories Codeforces Codeforces Round #467 (Div. 1) & Codeforces Round #467 (Div. 2) 3
104 Arpa and an exam about geometry Categories Codeforces Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 3
105 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
106 Robbers' watch Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 3
107 Fix a Tree Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 3
108 Santa Claus and Keyboard Check Categories Codeforces Technocup 2017 - Elimination Round 3 3
109 Hard Process Categories Codeforces Educational Codeforces Round 11 3
110 Finding Team Member Categories Codeforces Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
111 Constellation Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 3
112 Hongcow Solves A Puzzle Categories Codeforces Codeforces Round #385 (Div. 2) 3
113 Party Lemonade Categories Codeforces Hello 2018 3
114 Sorting the Coins Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 3
115 Seating On Bus Categories Codeforces Educational Codeforces Round 11 3
116 Bear and Reverse Radewoosh Categories Codeforces VK Cup 2016 - Round 1 (Div. 2 Edition) 3
117 Success Rate Categories Codeforces VK Cup 2017 - Round 3 3
118 Food on the Plane Categories Codeforces Canada Cup 2016 3
119 Mr. Kitayuta, the Treasure Hunter Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 3
120 Bear and Colors Categories Codeforces VK Cup 2016 - Round 3 3
121 "Or" Game Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
122 Bear and String Distance Categories Codeforces Educational Codeforces Round 8 3
123 Hongcow Builds A Nation Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 3
124 Co-prime Array Categories Codeforces Educational Codeforces Round 11 3
125 The Meeting Place Cannot Be Changed Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 3
126 Dreamoon and Sums Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 3
127 z-sort Categories Codeforces Educational Codeforces Round 10 3
128 Petya and Catacombs Categories Codeforces ?????????? 2018 - ?????????? ????? 3 3
129 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
130 LLPS Categories Codeforces Codeforces Round #127 (Div. 2) 3
131 No to Palindromes! Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 3
132 A Problem about Polyline Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 3
133 New Skateboard Categories Codeforces Educational Codeforces Round 8 3
134 DNA Alignment Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 3
135 Frodo and pillows Categories Codeforces Codeforces Round #393 (Div. 2) (8VC Venture Cup 2017 - Final Round Div. 2 Edition) 3
136 T-Shirt Hunt Categories Codeforces Codeforces Round #412 (rated, Div. 2, base on VK Cup 2017 Round 3) 3
137 Santa Claus and Robot Categories Codeforces Technocup 2017 - Elimination Round 3 3
138 Design Tutorial: Inverse the Problem Categories Codeforces Codeforces Round #270 4
139 Alice, Bob, Two Teams Categories Codeforces Educational Codeforces Round 9 4
140 Appleman and Tree Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 4
141 Tennis Game Categories Codeforces Codeforces Round #283 (Div. 2) & Codeforces Round #283 (Div. 1) 4
142 Colliders Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
143 Problems for Round Categories Codeforces Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition) 4
144 Too Easy Problems Categories Codeforces Hello 2018 4
145 Grandma Laura and Apples Categories Codeforces Educational Codeforces Round 9 4
146 Ciel the Commander Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 4
147 Innokenty and a Football League Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 4
148 Hidden Word Categories Codeforces Canada Cup 2016 4
149 Bus Game Categories Codeforces Codeforces Beta Round #71 4
150 Bear and Two Paths Categories Codeforces VK Cup 2016 - Round 3 4
151 Hometask Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 4
152 Weakness and Poorness Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 4
153 Travel Card Categories Codeforces 8VC Venture Cup 2017 - Final Round 4
154 Connecting Universities Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
155 Dreamoon and Sets Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 4
156 New Year and Fireworks Categories Codeforces Good Bye 2016 4
157 Five Dimensional Points Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) & Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 4
158 Peter and Snow Blower Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 4
159 Ciel and Robot Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 4
160 Qualification Rounds Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 4
161 Pavel and barbecue Categories Codeforces 8VC Venture Cup 2017 - Final Round 4
162 As Fast As Possible Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 4
163 The Smallest String Concatenation Categories Codeforces Educational Codeforces Round 9 4
164 Drazil and Tiles Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 4
165 Race Against Time Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 4
166 Volatile Kite Categories Codeforces VK Cup 2017 - Round 2 4
167 Fox And Jumping Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 4
168 Gabriel and Caterpillar Categories Codeforces Educational Codeforces Round 10 4
169 Weird Chess Categories Codeforces Codeforces Round #300 4
170 Bear and Tree Jumps Categories Codeforces VK Cup 2017 - Round 1 5
171 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
172 Number of Parallelograms Categories Codeforces Educational Codeforces Round 11 5
173 Underground Lab Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 5
174 Contest Balloons Categories Codeforces Canada Cup 2016 5
175 Colorful Field Categories Codeforces Codeforces Beta Round #71 5
176 Kyoya and Permutation Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 5
177 Clear Symmetry Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 5
178 New Year and Ancient Prophecy Categories Codeforces Good Bye 2015 5
179 Literature Lesson Categories Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 5
180 Nested Segments Categories Codeforces Educational Codeforces Round 10 5
181 Skills Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 5
182 Ciel and Duel Categories Codeforces Codeforces Round #190 (Div. 1) & Codeforces Round #190 (Div. 2) 5
183 Foe Pairs Categories Codeforces Educational Codeforces Round 10 5
184 Board Game Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
185 Restore Cube Categories Codeforces Codeforces Round #265 (Div. 1) 5
186 Jury Meeting Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 5
187 Artsem and Saunders Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 5
188 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
189 Fox and Card Game Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
190 Making Sequences is Fun Categories Codeforces Codeforces Round #219 (Div. 2) 5
191 Counting Rectangles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 5
192 Fox and Minimal path Categories Codeforces Codeforces Round #228 (Div. 1) & Codeforces Round #228 (Div. 2) 5
193 Sleepy Game Categories Codeforces Codeforces Round #467 (Div. 1) & Codeforces Round #467 (Div. 2) 5
194 Choosing Balls Categories Codeforces Codeforces Round #162 (Div. 1) & Codeforces Round #162 (Div. 2) 5
195 Kay and Snowflake Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 5
196 High Cry Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 6
197 Hamiltonian Spanning Tree Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 6
198 National Property Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) & Codeforces Round #441 (Div. 2, by Moscow Team Olympiad) 6
199 Dynamic Problem Scoring Categories Codeforces VK Cup 2017 - Round 3 6
200 Mr. Kitayuta's Technology Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 6
201 Delivery Bears Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
202 Dreamoon and Strings Categories Codeforces Codeforces Round #272 (Div. 2) & Codeforces Round #272 (Div. 1) 6
203 Arpa and a list of numbers Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) & Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 6
204 Bear and Polynomials Categories Codeforces VK Cup 2016 - Round 1 6
205 Substitutes in Number Categories Codeforces Codeforces Round #265 (Div. 1) & Codeforces Round #265 (Div. 2) 6
206 Hongcow's Game Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 6
207 Pluses everywhere Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
208 Boredom Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) & Codeforces Round #433 (Div. 2, based on Olympiad of Metropolises) 6
209 Tree Folding Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 6
210 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
211 Magic Numbers Categories Codeforces Educational Codeforces Round 8 6
212 A Heap of Heaps Categories Codeforces Codeforces Round #300 6
213 Restoration of string Categories Codeforces ?????????? 2018 - ?????????? ????? 3 6
214 Bear and Up-Down Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
215 Longest Subsequence Categories Codeforces Educational Codeforces Round 9 6
216 Santa Claus and Tangerines Categories Codeforces Technocup 2017 - Elimination Round 3 6
217 Drazil and Park Categories Codeforces Codeforces Round #292 (Div. 2) & Codeforces Round #292 (Div. 1) 6
218 Watching Fireworks is Fun Categories Codeforces Codeforces Round #219 (Div. 1) & Codeforces Round #219 (Div. 2) 6
219 Cubes Categories Codeforces Codeforces Round #295 (Div. 2) & Codeforces Round #295 (Div. 1) 6
220 Fox And Dinner Categories Codeforces Codeforces Round #290 (Div. 2) & Codeforces Round #290 (Div. 1) 6
221 Demiurges Play Again Categories Codeforces Codeforces Round #300 6
222 Ciel and Gondolas Categories Codeforces Codeforces Round #190 (Div. 1) 6
223 Santa Claus and a Palindrome Categories Codeforces Technocup 2017 - Elimination Round 3 6
224 Appleman and a Sheet of Paper Categories Codeforces Codeforces Round #263 (Div. 1) & Codeforces Round #263 (Div. 2) 6
225 Beaver Categories Codeforces Codeforces Beta Round #71 6
226 New Year and Arbitrary Arrangement Categories Codeforces Good Bye 2017 6
227 Love Triangles Categories Codeforces Codeforces Round #309 (Div. 1) & Codeforces Round #309 (Div. 2) 6
228 Guess That Car! Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 6
229 Distributing Parts Categories Codeforces Codeforces Round #283 (Div. 2) 6
230 Double Profiles Categories Codeforces Codeforces Round #109 (Div. 1) & Codeforces Round #109 (Div. 2) 6
231 Wallpaper Categories Codeforces Codeforces Beta Round #99 (Div. 2) 6
232 Digits Permutations Categories Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 7
233 Prairie Partition Categories Codeforces VK Cup 2017 - Round 3 7
234 Bacterial Melee Categories Codeforces 8VC Venture Cup 2017 - Final Round 7
235 Pursuit For Artifacts Categories Codeforces Educational Codeforces Round 10 7
236 Levels and Regions Categories Codeforces VK Cup 2016 - Round 3 7
237 Bear and Forgotten Tree 2 Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 7
238 Arpa and a game with Mojtaba Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) & Codeforces Round #432 (Div. 2, based on IndiaHacks Final Round 2017) 7
239 Bear and Contribution Categories Codeforces VK Cup 2016 - Round 1 7
240 Necklace Categories Codeforces Codeforces Round #339 (Div. 1) & Codeforces Round #339 (Div. 2) 7
241 Hongcow Buys a Deck of Cards Categories Codeforces Codeforces Round #385 (Div. 1) & Codeforces Round #385 (Div. 2) 7
242 Brand New Easy Problem Categories Codeforces Codeforces Round #127 (Div. 2) 7
243 Nikita and stack Categories Codeforces 8VC Venture Cup 2017 - Final Round 7
244 Break Up Categories Codeforces Codeforces Round #364 (Div. 1) & Codeforces Round #364 (Div. 2) 7
245 New Year and Old Subsequence Categories Codeforces Good Bye 2016 7
246 Thief in a Shop Categories Codeforces Educational Codeforces Round 9 7
247 New Year and Rainbow Roads Categories Codeforces Good Bye 2017 7
248 Set Theory Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 7
249 Huge Strings Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 7
250 Bear and Square Grid Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 7
251 Nudist Beach Categories Codeforces Codeforces Round #309 (Div. 1) 7
252 Fragile Bridges Categories Codeforces Codeforces Round #127 (Div. 1) & Codeforces Round #127 (Div. 2) 7
253 Vulnerable Kerbals Categories Codeforces VK Cup 2017 - Round 2 7
254 Lock Puzzle Categories Codeforces Codeforces Round #467 (Div. 1) & Codeforces Round #467 (Div. 2) 7
255 Bear and Company Categories Codeforces VK Cup 2017 - Round 1 7
256 Encoding Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 7
257 Axel and Marston in Bitland Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 7
258 Mushroom Gnomes - 2 Categories Codeforces Codeforces Beta Round #99 (Div. 1) & Codeforces Beta Round #99 (Div. 2) 7
259 Bear and Drawing Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 7
260 New Year and Three Musketeers Categories Codeforces Good Bye 2015 7
261 LRU Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 7
262 Kingdom and its Cities Categories Codeforces Codeforces Round #339 (Div. 1) 8
263 Yet Another Minimization Problem Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 8
264 LCS Again Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] & Codeforces Round #320 (Div. 2) [Bayan Thanks-Round] 8
265 Magic Matrix Categories Codeforces Educational Codeforces Round 9 8
266 Drazil and Morning Exercise Categories Codeforces Codeforces Round #292 (Div. 1) 8
267 World of Darkraft - 2 Categories Codeforces Codeforces Round #265 (Div. 1) 8
268 Shop Categories Codeforces Codeforces Round #295 (Div. 1) 8
269 Souvenirs Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 8
270 New Year and Original Order Categories Codeforces Good Bye 2017 8
271 Zbazi in Zeydabad Categories Codeforces Educational Codeforces Round 8 8
272 Michael and Charging Stations Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 8
273 Maximum Element Categories Codeforces ?????????? 2018 - ?????????? ????? 3 8
274 Santa Clauses and a Soccer Championship Categories Codeforces Technocup 2017 - Elimination Round 3 8
275 Choosing Subtree is Fun Categories Codeforces Codeforces Round #219 (Div. 1) 8
276 Kay and Eternity Categories Codeforces Codeforces Round #359 (Div. 1) 8
277 Bear and Bowling 4 Categories Codeforces Educational Codeforces Round 11 8
278 Binary Blocks Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 8
279 Password Categories Codeforces Codeforces Beta Round #71 8
280 New Year and Entity Enumeration Categories Codeforces Good Bye 2017 8
281 Double Knapsack Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 8
282 Delivery Club Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) 8
283 New Year and Cleaning Categories Codeforces Good Bye 2015 8
284 Royal Questions Categories Codeforces Codeforces Round #441 (Div. 1, by Moscow Team Olympiad) 8
285 Different Subsets For All Tuples Categories Codeforces Educational Codeforces Round 11 8
286 Too Much Money Categories Codeforces Canada Cup 2016 8
287 Robot Arm Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 8
288 Paper task Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 8
289 Logical Expression Categories Codeforces Hello 2018 8
290 Cycling City Categories Codeforces Codeforces Round #295 (Div. 1) 9
291 The Classic Problem Categories Codeforces Codeforces Round #265 (Div. 1) 9
292 Eleventh Birthday Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 9
293 Ciel and Flipboard Categories Codeforces Codeforces Round #190 (Div. 1) 9
294 Thoroughly Bureaucratic Organization Categories Codeforces Codeforces Round #127 (Div. 1) 9
295 Bear and Bad Powers of 42 Categories Codeforces Codeforces Round #356 (Div. 1) 9
296 Cool Slogans Categories Codeforces Codeforces Round #364 (Div. 1) 9
297 Bear and Fair Set Categories Codeforces Educational Codeforces Round 8 9
298 New Year and Finding Roots Categories Codeforces Good Bye 2016 9
299 Mr. Kitayuta vs. Bamboos Categories Codeforces Codeforces Round #286 (Div. 2) & Codeforces Round #286 (Div. 1) 9
300 Dreamoon and Binary Categories Codeforces Codeforces Round #272 (Div. 1) 9
301 Beaver's Calculator 1.0 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 9
302 Similar Words Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 9
303 Policeman and a Tree Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 9
304 Bear and Chase Categories Codeforces Codeforces Round #356 (Div. 1) 9
305 Fox And Polygon Categories Codeforces Codeforces Round #290 (Div. 1) 9
306 Travelling Through the Snow Queen's Kingdom Categories Codeforces Codeforces Round #359 (Div. 1) 9
307 Design Tutorial: Increase the Constraints Categories Codeforces Codeforces Round #270 9
308 Beaver's Calculator 1.0 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 9
309 Diverging Directions Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 9
310 Brand New Problem Categories Codeforces Codeforces Round #127 (Div. 1) 9
311 Varying Kibibits Categories Codeforces VK Cup 2017 - Round 2 9
312 The Beaver's Problem - 2 Categories Codeforces ABBYY Cup 2.0 - Hard 9
313 Roadside Trees Categories Codeforces Codeforces Round #162 (Div. 1) 9
314 Fox And Travelling Categories Codeforces Codeforces Round #290 (Div. 1) 9
315 Fox and Perfect Sets Categories Codeforces Codeforces Round #228 (Div. 1) 9
316 Design Tutorial: Change the Goal Categories Codeforces Codeforces Round #270 9
317 Andryusha and Nervous Barriers Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 9
318 World of Darkraft Categories Codeforces Codeforces Beta Round #99 (Div. 1) 9
319 Beaver's Calculator 1.0 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 9
320 Appleman and Complicated Task Categories Codeforces Codeforces Round #263 (Div. 1) 9
321 Family Photos Categories Codeforces Canada Cup 2016 9
322 Bear and Destroying Subtrees Categories Codeforces VK Cup 2016 - Round 3 9
323 Move by Prime Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 9
324 Flatland Fencing Categories Codeforces Codeforces Round #109 (Div. 1) 9
325 Colorful Stones Categories Codeforces Codeforces Round #162 (Div. 1) 9
326 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
327 Strongly Connected Tournament Categories Codeforces Hello 2018 9
328 Optimal Point Categories Codeforces Codeforces Round #359 (Div. 1) & Codeforces Round #359 (Div. 2) 9
329 Limak and Shooting Points Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 9
330 Convex Countour Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 9
331 Masha and Cactus Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 9
332 Perishable Roads Categories Codeforces VK Cup 2017 - Round 3 9
333 Huffman Coding on Segment Categories Codeforces Codeforces Round #364 (Div. 1) 9
334 Tournament Construction Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) 9
335 Walking! Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] 9
336 Military Trainings Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 9
337 Bear and Paradox Categories Codeforces VK Cup 2016 - Round 1 9
338 Future Failure Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 10
339 Hongcow Draws a Circle Categories Codeforces Codeforces Round #385 (Div. 1) 10
340 New Year and Boolean Bridges Categories Codeforces Good Bye 2017 10
341 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
342 Math, math everywhere Categories Codeforces Codeforces Round #397 by Kaspersky Lab and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 10
343 Lada Malina Categories Codeforces Codeforces Round #433 (Div. 1, based on Olympiad of Metropolises) 10
344 Summer Dichotomy Categories Codeforces Codeforces Round #300 10
345 Symmetric Projections Categories Codeforces ?????????? 2018 - ?????????? ????? 3 10
346 Game with Two Trees Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
347 Airplane Arrangements Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 10
348 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
349 Drawing Circles is Fun Categories Codeforces Codeforces Round #219 (Div. 1) 10
350 Choosing Ads Categories Codeforces VK Cup 2016 - Round 3 10
351 Verifying Kingdom Categories Codeforces VK Cup 2017 - Round 2 10
352 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
353 Iqea Categories Codeforces Codeforces Round #467 (Div. 1) 10
354 Landmarks Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
355 Game with Two Trees Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
356 Don't Exceed Categories Codeforces Hello 2018 10
357 Coprime Permutation Categories Codeforces Codeforces Round #363 (Div. 1) 10
358 New Year and Forgotten Tree Categories Codeforces Good Bye 2015 10
359 Fox and Meteor Shower Categories Codeforces Codeforces Round #228 (Div. 1) 10
360 Berserk Robot Categories Codeforces Codeforces Round #300 10
361 To Play or not to Play Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 10
362 Bear and Isomorphic Points Categories Codeforces VK Cup 2017 - Round 1 10
363 Intranet of Buses Categories Codeforces ?????????? 2017 - ????? (?????? ??? ??????-??????????) 10
364 Hellish Constraints Categories Codeforces Codeforces Beta Round #99 (Div. 1) 10
365 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
366 Appleman and a Game Categories Codeforces Codeforces Round #263 (Div. 1) 10
367 Test Data Generation Categories Codeforces VK Cup 2017 - Round 3 10
368 Messages on a Tree Categories Codeforces Canada Cup 2016 10
369 Security System Categories Codeforces Codeforces Beta Round #71 10
370 Kyoya and Train Categories Codeforces Codeforces Round #309 (Div. 1) 10
371 Combining Slimes Categories Codeforces Wunder Fund Round 2016 (Div. 1 + Div. 2 combined) 10
372 Bears and Juice Categories Codeforces VK Cup 2016 - Round 3 10
373 Subsequences Return Categories Codeforces Codeforces Round #283 (Div. 1) 10
374 World of Tank Categories Codeforces Codeforces Round #467 (Div. 1) 10
375 Martian Colony Categories Codeforces Codeforces Round #109 (Div. 1) 10
376 Military Trainings Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
377 Bear and Bowling Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 10
378 Power Substring Categories Codeforces Hello 2018 10
379 New Year and Cake Categories Codeforces Good Bye 2015 10
380 Cron Categories Codeforces Codeforces Round #363 (Div. 1) 10
381 Satellites Categories Codeforces Russian Code Cup 2017 - Finals [Unofficial Mirror, Div. 1 Only Recommended, Teams Allowed] 10
382 Rainbow Balls Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) 10
383 Expected Earnings Categories Codeforces IndiaHacks 2nd Elimination 2017 (unofficial, unrated mirror, ICPC rules) 10
384 Bear and Rectangle Strips Categories Codeforces VK Cup 2017 - Round 1 10
385 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
386 Blog Post Rating Categories Codeforces VK Cup 2017 - Round 3 10
387 Long number Categories Codeforces 8VC Venture Cup 2017 - Final Round 10
388 New Year and Snowy Grid Categories Codeforces Good Bye 2016 10
389 Dynamic Shortest Path Categories Codeforces AIM Tech Round 4 (Div. 1) 10
390 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
391 Gears Categories Codeforces Codeforces Round #283 (Div. 1) 10
392 Berland Miners Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
393 Military Trainings Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
394 Random Elections Categories Codeforces Codeforces Round #432 (Div. 1, based on IndiaHacks Final Round 2017) 10
395 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
396 Mirror Box Categories Codeforces Codeforces Round #320 (Div. 1) [Bayan Thanks-Round] 10
397 Bear and Chemistry Categories Codeforces VK Cup 2016 - Round 1 10
398 Hongcow Masters the Cyclic Shift Categories Codeforces Codeforces Round #385 (Div. 1) 10
399 Design Tutorial: Learn from a Game Categories Codeforces Codeforces Round #270 10
400 Puzzle Lover Categories Codeforces Codeforces Round #339 (Div. 1) 10
401 El Toll Caves Categories Codeforces Codeforces Round #438 by Sberbank and Barcelona Bootcamp (Div. 1 + Div. 2 combined) 10
402 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
403 Byteland coins Categories Codeforces 8VC Venture Cup 2017 - Final Round 10
404 New Year and Binary Tree Paths Categories Codeforces Good Bye 2016 10
405 Ants on a Circle Categories Codeforces Educational Codeforces Round 10 10
406 Bearish Fanpages Categories Codeforces VK Cup 2016 - Round 3 10
407 Mod Mod Mod Categories Codeforces Codeforces Round #445 (Div. 1, based on Technocup 2018 Elimination Round 3) 10
408 Game with Two Trees Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
409 The Beaver's Problem - 3 Categories Codeforces Abbyy Cup 2.0 - Final (unofficial) 10
410 Dreamoon and Notepad Categories Codeforces Codeforces Round #272 (Div. 1) 10