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Random
Hot problems
WC '01 P3 - Back to the Future
CCC '16 S4 - Combining Riceballs
GFSSOC '15 Winter S1 - OR-deal
DMOPC '17 Contest 4 P1 - Ribbon Colouring Fun
ECOO '20 P2 - Online Shopping
CCC '24 J4 - Troublesome Keys
IOI '11 P2 - Race
Problem
Category
Points
AC %
Users
An Animal Contest 6 P5 - Rock Painting
AAC
20p
12.3%
18
An Animal Contest 6 P6 - Generous Grizzly Gift Giving
AAC
35p
10.4%
7
An Animal Contest 7 P1 - Squirrnect 4
AAC
3
21.5%
452
An Animal Contest 7 P2 - Squirrel Structures
AAC
7p
15.3%
139
An Animal Contest 7 P3 - Squirrel Scramble
AAC
12p
14.9%
67
An Animal Contest 7 P4 - Squirrel Shenanigans
AAC
20
19.2%
17
An Animal Contest 7 P5 - Squirrel Scheming
AAC
17p
13.6%
32
An Animal Contest 7 P6 - S-Squirrel?
AAC
20p
11.4%
7
Advanced Battleships
Uncategorized
15p
11.1%
32
Appleby Contest '19 P1 - Darcy's Debilitating Demands
Uncategorized
3p
17.7%
317
Appleby Contest '19 P2 - The Love Letter
Uncategorized
5p
29.4%
511
Appleby Contest '19 P3 - A Recursion Problem
Uncategorized
5p
32.6%
258
Appleby Contest '19 P4 - Rectangles
Uncategorized
7p
19.7%
202
Appleby Contest '19 P5 - Matrix Operation
Uncategorized
10p
32.7%
304
Appleby Contest '20 P1 - Terrific Triangles
Uncategorized
3p
22.2%
521
Appleby Contest '20 P2 - Playful Playdoughs
Uncategorized
5p
23.9%
339
Appleby Contest '20 P3 - Ridiculous String
Uncategorized
10p
17.5%
188
Appleby Contest '20 P4 - Philosophy Class
Uncategorized
12p
15.4%
86
Appleby Contest '20 P5 - Ridiculous Tree
Uncategorized
15p
22.4%
61
Another Contest 10 Problem 1 - Wesley's Anger Contest 7 Problem 1 - Ideology
ACC
0p
2.1%
5
Another Contest 10 Problem 2 - Wesley's Anger Contest 7 Problem 2 - Short Love Letters in CS
ACC
0p
5.7%
7
Another Contest 10 Problem 3 - Wesley's Anger Contest 7 Problem 3 - The Obligatory Rage Tree Problem
ACC
15p
1.1%
2
다른 콘테스트 10 문제 4 - 웨슬리의 분노 대결 7 문제 4 - 이 문제는 의도적으로 비워 둡니다
ACC
0p
0.6%
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
12.1%
44
Another Contest 1 Problem 2 - Graphs
ACC
15
6.5%
76
Another Contest 1 Problem 3 - Poutine
ACC
10
4.1%
58
Another Contest 2 Problem 1 - Poutine
ACC
15
14.6%
106
Another Contest 2 Problem 2 - Poutine
ACC
10
28.7%
143
Another Contest 2 Problem 3 - Poutine
ACC
15
26.9%
133
Another Contest 3 Problem 1 - Diverse Arrays
ACC
7
17.2%
335
Another Contest 3 Problem 2 - Camelot
ACC
15
16.2%
75
Another Contest 3 Problem 3 - Lexicographically Largest Common Subsequence
ACC
7
17.9%
168
Another Contest 3 Problem 4 - Range Updates and Range Queries
ACC
15
14.2%
54
Another Contest 4 Problem 0 - The April Fools Warmup Problem
ACC
0
27.7%
467
Another Contest 4 Problem 1 - Identity Crisis
ACC
0
34.9%
339
Another Contest 4 Problem 10 - Two Rectangles
ACC
0
56.5%
137
Another Contest 4 Problem 11 - Three Rectangles
ACC
0
36.1%
53
Another Contest 4 Problem 2 - The Deutsch-Jozsa Algorithm
ACC
0
73.5%
261
Another Contest 4 Problem 3 - An Isosceles Right Triangle
ACC
0
71.6%
192
Another Contest 4 Problem 4 - Another Isosceles Right Triangle
ACC
0
45.8%
118
Another Contest 4 Problem 5 - Prime Time Television
ACC
0
62.3%
160
Another Contest 4 Problem 6 - One Billion Views
ACC
0
12.8%
47
Another Contest 4 Problem 7 - A Sack of Creatures
ACC
0
39.6%
44
Another Contest 4 Problem 8 - DMOJ!
ACC
0
27.3%
53
Another Contest 4 Problem 9 - Fast Fourier Transform!
ACC
0
16.7%
43
Another Contest 5 Problem 1 - Goat Fence
ACC
3p
27.0%
631
Another Contest 5 Problem 2 - Great Graffiti
ACC
5p
18.4%
217
Another Contest 5 Problem 3 - Cutting Cheese Costs
ACC
5p
22.8%
366
Another Contest 5 Problem 4 - Tudor Interacts With Poop
ACC
15p
16.1%
26
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