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Random
Hot problems
CCC '25 S2 - Cryptogram Cracking Club
CCC '25 J5 - Connecting Territories
CCO '18 P1 - Geese vs. Hawks
Baltic OI '17 P6 - Cat in a tree
Arcadia Computing Contest 2 P5 - lp0 is on fire!
Baltic OI '14 P5 - Portals
IOI '08 P1 - Type Printer
Problem
Category
Points
AC %
Users
An Animal Contest 6 P5 - Rock Painting
AAC
20p
12.1%
19
An Animal Contest 6 P6 - Generous Grizzly Gift Giving
AAC
35p
11.6%
9
An Animal Contest 7 P1 - Squirrnect 4
AAC
3
20.7%
488
An Animal Contest 7 P2 - Squirrel Structures
AAC
7p
15.8%
163
An Animal Contest 7 P3 - Squirrel Scramble
AAC
12p
15.2%
70
An Animal Contest 7 P4 - Squirrel Shenanigans
AAC
20
18.3%
19
An Animal Contest 7 P5 - Squirrel Scheming
AAC
17p
13.7%
34
An Animal Contest 7 P6 - S-Squirrel?
AAC
20p
12.8%
7
Advanced Battleships
Uncategorized
15p
10.7%
34
Appleby Contest '19 P1 - Darcy's Debilitating Demands
Uncategorized
3p
17.6%
340
Appleby Contest '19 P2 - The Love Letter
Uncategorized
5p
29.7%
550
Appleby Contest '19 P3 - A Recursion Problem
Uncategorized
5p
31.4%
291
Appleby Contest '19 P4 - Rectangles
Uncategorized
7p
19.2%
228
Appleby Contest '19 P5 - Matrix Operation
Uncategorized
10p
32.8%
327
Appleby Contest '20 P1 - Terrific Triangles
Uncategorized
3p
22.4%
563
Appleby Contest '20 P2 - Playful Playdoughs
Uncategorized
5p
23.6%
352
Appleby Contest '20 P3 - Ridiculous String
Uncategorized
10p
17.6%
193
Appleby Contest '20 P4 - Philosophy Class
Uncategorized
12p
15.3%
90
Appleby Contest '20 P5 - Ridiculous Tree
Uncategorized
15p
22.5%
62
Another Contest 10 Problem 1 - Wesley's Anger Contest 7 Problem 1 - Ideology
ACC
0p
2.3%
8
Another Contest 10 Problem 2 - Wesley's Anger Contest 7 Problem 2 - Short Love Letters in CS
ACC
0p
5.3%
9
Another Contest 10 Problem 3 - Wesley's Anger Contest 7 Problem 3 - The Obligatory Rage Tree Problem
ACC
15p
0.9%
2
다른 콘테스트 10 문제 4 - 웨슬리의 분노 대결 7 문제 4 - 이 문제는 의도적으로 비워 둡니다
ACC
0p
0.5%
2
Another Contest 10 Problem 5 - Wesley's Anger Contest 7 Problem 5 - Name That Song
ACC
0p
0.1%
1
Another Contest 1 Problem 1 - Binary String Operations
ACC
25
11.8%
46
Another Contest 1 Problem 2 - Graphs
ACC
15
6.4%
79
Another Contest 1 Problem 3 - Poutine
ACC
10
4.0%
62
Another Contest 2 Problem 1 - Poutine
ACC
15
15.1%
120
Another Contest 2 Problem 2 - Poutine
ACC
10
27.8%
146
Another Contest 2 Problem 3 - Poutine
ACC
15
26.8%
137
Another Contest 3 Problem 1 - Diverse Arrays
ACC
7
17.2%
386
Another Contest 3 Problem 2 - Camelot
ACC
15
16.4%
80
Another Contest 3 Problem 3 - Lexicographically Largest Common Subsequence
ACC
7
18.1%
188
Another Contest 3 Problem 4 - Range Updates and Range Queries
ACC
15
14.8%
73
Another Contest 4 Problem 0 - The April Fools Warmup Problem
ACC
0
28.4%
482
Another Contest 4 Problem 1 - Identity Crisis
ACC
0
34.7%
352
Another Contest 4 Problem 10 - Two Rectangles
ACC
0
56.6%
141
Another Contest 4 Problem 11 - Three Rectangles
ACC
0
34.8%
57
Another Contest 4 Problem 2 - The Deutsch-Jozsa Algorithm
ACC
0
72.3%
276
Another Contest 4 Problem 3 - An Isosceles Right Triangle
ACC
0
71.5%
201
Another Contest 4 Problem 4 - Another Isosceles Right Triangle
ACC
0
45.8%
122
Another Contest 4 Problem 5 - Prime Time Television
ACC
0
62.1%
165
Another Contest 4 Problem 6 - One Billion Views
ACC
0
75.5%
164
Another Contest 4 Problem 7 - A Sack of Creatures
ACC
0
58.9%
56
Another Contest 4 Problem 8 - DMOJ!
ACC
0
29.7%
55
Another Contest 4 Problem 9 - Fast Fourier Transform!
ACC
0
48.3%
58
Another Contest 5 Problem 1 - Goat Fence
ACC
3p
26.6%
679
Another Contest 5 Problem 2 - Great Graffiti
ACC
5p
18.5%
226
Another Contest 5 Problem 3 - Cutting Cheese Costs
ACC
5p
23.6%
397
Another Contest 5 Problem 5 - Another Cheese Problem
ACC
12
18.6%
83
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