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Random
Hot problems
COCI '14 Contest 6 #4 Kratki
ACSL '09 Practice P4 - Rank
Wesley's Anger Contest 1 Problem 5 - Rule of Four
COCI '10 Contest 2 #2 Napor
DMOPC '14 Contest 4 P3 - Golden Lily
IOI '00 P1 - Palindrome
TLE '16 Contest 7 P5 - Shortest Path Faster Algorithm
Problem
Category ▴
Points
AC %
Users
Distinct Shapes
Uncategorized
10
22.1%
37
BPC 1 S2 - Train Commute
Uncategorized
12p
6.6%
47
Guess the Wordle
Uncategorized
10
18.1%
5
BPC 1 S4 - Binary Matrices
Uncategorized
25p
12.2%
9
BPC 1 S3 - Bus Stops
Uncategorized
17p
12.9%
25
Cheerio Contest 1 S2 - School Expansion
Uncategorized
7p
31.0%
101
Cheerio Contest 1 J2 - Phys Ed Class
Uncategorized
3
39.5%
135
Stacking Boxes
Uncategorized
5
34.9%
81
Spy Tree
Uncategorized
15p
21.9%
19
Age Demographic
Uncategorized
5
19.5%
111
Lemon
Uncategorized
10
33.5%
15
A Math Contest P5 - Good Arrays
Uncategorized
7p
29.6%
129
A Math Contest P11 - Weak Goldbach's Conjecture
Uncategorized
15
23.9%
58
A Math Contest P2 - Subsequence Sum
Uncategorized
5
29.2%
343
A Math Contest P10 - Tricky Multisets
Uncategorized
12
25.7%
48
A Math Contest P7 - Factors
Uncategorized
10
29.5%
130
A Math Contest P1 - Arrays
Uncategorized
5
32.1%
249
A Math Contest P14 - Choosing Marbles
Uncategorized
25p
21.9%
37
Adaptive Mechanized Calcium Chlorohypochlorite
Uncategorized
25
15.2%
9
A Math Contest P4 - Circle Cutting
Uncategorized
7
40.9%
105
A Math Contest P13 - Ways
Uncategorized
17
18.9%
28
Pie
Uncategorized
3
61.5%
168
BPC 1 J2 - Cake
Uncategorized
3
34.7%
207
A Math Contest P12 - Triangles
Uncategorized
17
29.5%
20
A Math Contest P8 - Permutation Counting
Uncategorized
12
35.9%
61
A Math Contest P16 - Morbius vs. Suibom
Uncategorized
25
18.2%
20
A Math Contest P15 - Matrix Fixed Point
Uncategorized
20
68.3%
30
Rule of Lemons
Uncategorized
10
16.7%
5
A Math Contest P9 - Buy Some Get Some
Uncategorized
12
27.1%
55
A Math Contest P17 - Heatwaves
Uncategorized
45
36.4%
3
A Math Contest P6 - Global Maximum
Uncategorized
10
28.6%
75
SGS Programming Challenge P4 - Toy in Psychology Class
Uncategorized
17p
8.0%
14
Building
Uncategorized
10p
24.5%
49
SGS Programming Challenge P3 - Tree in Biology Class
Uncategorized
15p
16.5%
39
Good Sets
Uncategorized
10p
27.2%
32
Bit Combinations
Uncategorized
7
33.3%
16
Lemon Tree
Uncategorized
20p
10.5%
14
Magic Bits
Uncategorized
10p
13.1%
40
BSSPC '22 P5 - Derrick and Orz Trees
Uncategorized
7p
19.4%
140
BSSPC '22 P6 - Permutations & Primogems
Uncategorized
10p
16.8%
108
BSSPC '22 P7 - Exec Team Applications
Uncategorized
10p
22.9%
87
Purple Lemon
Uncategorized
7p
21.4%
17
SGS Programming Challenge P5 - Tree After School
Uncategorized
20p
9.0%
7
SGS Programming Challenge P2 - Vending Machine in Lunch
Uncategorized
10p
12.2%
54
SGS Programming Challenge P1 - XOR in Computer Class
Uncategorized
7p
13.3%
156
MCIPC Contest 1 P1 - Factoring
Uncategorized
3
25.7%
79
MCIPC Contest 1 P2 - Infinite Chessboard
Uncategorized
3
49.1%
74
MCIPC Contest 1 P1 - Cypher
Uncategorized
5p
38.2%
49
BSSPC '22 P8 - Bayview's RGB Gaming PC
Uncategorized
10
26.9%
77
BSSPC '22 P2 - Rhyming Numbers
Uncategorized
3
45.1%
403
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