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#Errichto problems
Problem Name Online Judge Contest Difficulty Level
1 Bear and Finding Criminals Categories Codeforces Codeforces Round #356 (Div. 2) 1
2 Bear and Big Brother Categories Codeforces Codeforces Round #405 (rated, Div. 2, based on VK Cup 2017 Round 1) 1
3 Bear and Five Cards Categories Codeforces Codeforces Round #356 (Div. 2) 1
4 New Year and Hurry Categories Codeforces Good Bye 2016 1
5 Vacations Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 1
6 New Year and North Pole Categories Codeforces Good Bye 2016 1
7 Bear and Elections Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
8 New Year and Days Categories Codeforces Good Bye 2015 1
9 Launch of Collider Categories Codeforces Codeforces Round #363 (Div. 2) 1
10 Bear and Poker Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 1
11 New Year and Old Property Categories Codeforces Good Bye 2015 2
12 Bear and Friendship Condition Categories Codeforces VK Cup 2017 - Round 1 2
13 One Bomb Categories Codeforces Codeforces Round #363 (Div. 2) 2
14 Bear and Forgotten Tree 3 Categories Codeforces VK Cup 2016 - Round 1 2
15 Bear and Prime 100 Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 2
16 New Year and Domino Categories Codeforces Good Bye 2015 2
17 Bear and Three Balls Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 2
18 Bear and Game Categories Codeforces Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition) 2
19 Bear and Different Names Categories Codeforces VK Cup 2017 - Round 1 2
20 New Year and Rating Categories Codeforces Good Bye 2016 2
21 Bear and Displayed Friends Categories Codeforces VK Cup 2016 - Round 1 2
22 Bear and Three Musketeers Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 2
23 Bear and Blocks Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 3
24 Fix a Tree Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 3
25 Bear and Reverse Radewoosh Categories Codeforces VK Cup 2016 - Round 1 (Div. 2 Edition) 3
26 Bear and Compressing Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 3
27 Bear and String Distance Categories Codeforces Educational Codeforces Round 8 3
28 Bear and Colors Categories Codeforces VK Cup 2016 - Round 3 3
29 New Year and Fireworks Categories Codeforces Good Bye 2016 4
30 Problems for Round Categories Codeforces Codeforces Round #351 (VK Cup 2016 Round 3, Div. 2 Edition) 4
31 Bear and Two Paths Categories Codeforces VK Cup 2016 - Round 3 4
32 Board Game Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
33 Correcting Mistakes Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 5
34 New Year and Ancient Prophecy Categories Codeforces Good Bye 2015 5
35 Bear and Tree Jumps Categories Codeforces VK Cup 2017 - Round 1 5
36 Bear and Tower of Cubes Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 5
37 Contest Balloons Categories Codeforces Canada Cup 2016 5
38 Delivery Bears Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
39 Bear and Polynomials Categories Codeforces VK Cup 2016 - Round 1 6
40 Work Group Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 6
41 Bear and Up-Down Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 6
42 New Year and Old Subsequence Categories Codeforces Good Bye 2016 7
43 Levels and Regions Categories Codeforces VK Cup 2016 - Round 3 7
44 Bear and Square Grid Categories Codeforces Codeforces Round #356 (Div. 1) & Codeforces Round #356 (Div. 2) 7
45 New Year and Three Musketeers Categories Codeforces Good Bye 2015 7
46 Encoding Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 7
47 Bear and Forgotten Tree 2 Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 7
48 LRU Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 7
49 Bear and Contribution Categories Codeforces VK Cup 2016 - Round 1 7
50 Bear and Drawing Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) & Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 2) 7
51 Bear and Company Categories Codeforces VK Cup 2017 - Round 1 7
52 New Year and Cleaning Categories Codeforces Good Bye 2015 8
53 Bear and Bowling 4 Categories Codeforces Educational Codeforces Round 11 8
54 Paper task Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 8
55 Bear and Fair Set Categories Codeforces Educational Codeforces Round 8 9
56 New Year and Finding Roots Categories Codeforces Good Bye 2016 9
57 Bear and Cavalry Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 9
58 Limak and Shooting Points Categories Codeforces Codeforces Round #363 (Div. 1) & Codeforces Round #363 (Div. 2) 9
59 Bear and Paradox Categories Codeforces VK Cup 2016 - Round 1 9
60 Bear and Destroying Subtrees Categories Codeforces VK Cup 2016 - Round 3 9
61 Bear and Chase Categories Codeforces Codeforces Round #356 (Div. 1) 9
62 Move by Prime Categories Codeforces IndiaHacks 2016 - Online Edition (Div. 1 + Div. 2) 9
63 Bear and Bad Powers of 42 Categories Codeforces Codeforces Round #356 (Div. 1) 9
64 Bears and Juice Categories Codeforces VK Cup 2016 - Round 3 10
65 Bear and Rectangle Strips Categories Codeforces VK Cup 2017 - Round 1 10
66 Bear and Isomorphic Points Categories Codeforces VK Cup 2017 - Round 1 10
67 Bearish Fanpages Categories Codeforces VK Cup 2016 - Round 3 10
68 New Year and Cake Categories Codeforces Good Bye 2015 10
69 Choosing Ads Categories Codeforces VK Cup 2016 - Round 3 10
70 Landmarks Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
71 Bear and Bowling Categories Codeforces Codeforces Round #318 [RussianCodeCup Thanks-Round] (Div. 1) 10
72 Cron Categories Codeforces Codeforces Round #363 (Div. 1) 10
73 New Year and Forgotten Tree Categories Codeforces Good Bye 2015 10
74 Berland Miners Categories Codeforces VK Cup 2015 - Round 2 (unofficial online mirror, Div. 1 only) 10
75 Coprime Permutation Categories Codeforces Codeforces Round #363 (Div. 1) 10
76 Bear and Chemistry Categories Codeforces VK Cup 2016 - Round 1 10
77 New Year and Binary Tree Paths Categories Codeforces Good Bye 2016 10
78 New Year and Snowy Grid Categories Codeforces Good Bye 2016 10