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Random
Hot problems
CCC '24 S2 - Heavy-Light Composition
CCC '18 S2 - Sunflowers
CCC '24 S3 - Swipe
CCC '13 J4 - Time on task
CCC '24 J3 - Bronze Count
Back to School '24 P1 - Kicking
CCC '23 J3 - Special Event
Problem
Category ▾
Points
AC %
Users
APIO '09 P1 - Digging for Oil
APIO
20p
17.1%
147
APIO '09 P2 - The Siruseri Convention Centre
APIO
25p
18.7%
72
APIO '09 P3 - The Great ATM Robbery
APIO
20p
7.2%
132
APIO '18 P2 - Circle Selection
APIO
40p
13.5%
8
APIO '14 P3 - Beads and Wires
APIO
25p
24.3%
27
APIO '11 P3 - Guess My Word!
APIO
30p
23.9%
8
APIO '19 P1 - Strange Device
APIO
20
21.1%
55
APIO '19 P2 - Bridges
APIO
30p
11.3%
51
APIO '19 P3 - Street Lamps
APIO
35p
10.6%
31
APIO '17 P2 - Travelling Merchant
APIO
20p
23.3%
47
APIO '08 P2 - Roads
APIO
20p
16.3%
85
APIO '08 P3 - DNA
APIO
15p
31.1%
33
APIO '17 P1 - Land of the Rainbow Gold
APIO
30p
14.0%
16
APIO '22 P3 - Permutation
APIO
20p
9.0%
15
APIO '22 P2 - Game
APIO
25p
1.8%
3
APIO '23 P1 - Cyberland
APIO
17p
7.8%
35
APIO '23 P2 - Sequence
APIO
25p
7.4%
21
APIO '23 P3 - Alice, Bob, and Circuit
APIO
45p
0.0%
0
Another Contest 1 Problem 1 - Binary String Operations
ACC
25
12.0%
45
Another Contest 1 Problem 2 - Graphs
ACC
15
6.4%
79
Another Contest 1 Problem 3 - Poutine
ACC
10
4.1%
60
Another Contest 2 Problem 1 - Poutine
ACC
15
14.7%
109
Another Contest 2 Problem 2 - Poutine
ACC
10
28.6%
144
Another Contest 2 Problem 3 - Poutine
ACC
15
27.0%
135
Another Contest 3 Problem 1 - Diverse Arrays
ACC
7
17.0%
346
Another Contest 3 Problem 2 - Camelot
ACC
15
16.3%
77
Another Contest 3 Problem 3 - Lexicographically Largest Common Subsequence
ACC
7
17.9%
170
Another Contest 3 Problem 4 - Range Updates and Range Queries
ACC
15
14.6%
62
Another Contest 4 Problem 1 - Identity Crisis
ACC
0
34.7%
346
Another Contest 5 Problem 2 - Great Graffiti
ACC
5p
18.5%
221
Another Contest 4 Problem 2 - The Deutsch-Jozsa Algorithm
ACC
0
72.5%
272
Another Contest 4 Problem 3 - An Isosceles Right Triangle
ACC
0
71.7%
196
Another Contest 4 Problem 4 - Another Isosceles Right Triangle
ACC
0
45.8%
119
Another Contest 4 Problem 0 - The April Fools Warmup Problem
ACC
0
27.7%
470
Another Contest 4 Problem 5 - Prime Time Television
ACC
0
61.9%
162
Another Contest 4 Problem 6 - One Billion Views
ACC
0
80.6%
146
Another Contest 4 Problem 7 - A Sack of Creatures
ACC
0
57.7%
55
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 4 Problem 10 - Two Rectangles
ACC
0
56.6%
139
Another Contest 4 Problem 11 - Three Rectangles
ACC
0
36.1%
53
Another Contest 5 Problem 1 - Goat Fence
ACC
3p
27.1%
653
Another Contest 5 Problem 3 - Cutting Cheese Costs
ACC
5p
23.0%
374
Another Contest 5 Problem 5 - Another Cheese Problem
ACC
12
17.1%
67
다른 콘테스트 6 문제 5 - Fan Death
ACC
0
6.0%
29
Another Contest 6 Problem 1 - A Plus B (Warmup)
ACC
0p
35.0%
547
Another Contest 6 Problem 2 - A Plus B (Easy)
ACC
0p
37.9%
665
Another Contest 6 Problem 3 - A Plus B (Medium)
ACC
0p
17.4%
234
Another Contest 6 Problem 4 - A Plus B (Hard)
ACC
0p
20.7%
206
Another Contest 6 Problem 6 - Name That Song
ACC
0p
0.6%
8
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