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