Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points ▾ AC % Users
Another Contest 1 Problem 2 - Graphs ACC 15 6.5% 76
DMOPC '18 Contest 2 P5 - Another Sequence Problem DMOPC 15p 12.6% 48
Another Contest 2 Problem 1 - Poutine ACC 15 14.6% 106
Another Contest 2 Problem 3 - Poutine ACC 15 26.9% 133
DMOPC '18 Contest 3 P4 - Bob and English Class DMOPC 15p 33.5% 120
Another Contest 3 Problem 2 - Camelot ACC 15 16.1% 73
Another Contest 3 Problem 4 - Range Updates and Range Queries ACC 15 14.2% 54
New Year's '19 P4 - A Button Challenge Seasonal 15p 5.5% 7
Expected Value Uncategorized 15 24.5% 20
New Year's '19 P5 - Best Hat in Town Seasonal 15 21.3% 14
Deemo's Problem Uncategorized 15 13.6% 107
Educational DP Contest AtCoder Q - Flowers Uncategorized 15 50.3% 276
Educational DP Contest AtCoder R - Walk Uncategorized 15 63.5% 132
Valentine's Day '19 S4 - A Greedy Spouse Uncategorized 15p 11.1% 31
Mock CCC '19 Contest 2 S5 - Tudor Takes Pictures of Goats Mock CCC 15 6.8% 14
CTU Open Contest 2018 - Split Game ICPC 15 42.9% 9
CTU Open Contest 2018 - Escalators ICPC 15 45.5% 8
CCO '96 P3 - Quadtrees CCO 15 48.4% 84
CCO '96 P6 - Hoppers CCO 15 15.5% 29
COCI '17 Contest 1 #5 Deda COCI 15 39.9% 81
COCI '13 Contest 2 #5 Paleta COCI 15p 11.0% 24
COCI '18 Contest 1 #4 Strah COCI 15p 58.3% 54
COCI '15 Contest 6 #5 Krumpirko COCI 15p 21.6% 36
COCI '18 Contest 2 #3 Deblo COCI 15p 35.4% 27
COCI '18 Contest 2 #4 Maja COCI 15p 22.0% 22
COCI '18 Contest 3 #3 Sajam COCI 15p 32.4% 7
COCI '18 Contest 3 #4 NLO COCI 15 31.8% 18
COCI '18 Contest 6 #4 Simfonija COCI 15p 20.9% 38
COCI '18 Contest 5 #4 Parametriziran COCI 15p 18.3% 34
Falling Snowflakes Uncategorized 15p 40.7% 37
CEOI '17 P5 - Palindromic Partitions CEOI 15p 29.9% 99
CEOI '18 P1 - Cloud Computing CEOI 15p 34.0% 77
CEOI '18 P2 - Global Warming CEOI 15p 29.9% 67
Wesley's Anger Contest 1 Problem 4 (Easy Version) - A Red-Black Tree Problem WAC 15p 47.0% 50
K-Dimensional Grids Uncategorized 15p 27.7% 21
CCO '99 P5 - Sum Of Products CCO 15 4.3% 1
CCO '99 P6 - Fast Food CCO 15 34.4% 10
CCO '00 P3 - The Game Of 31 CCO 15 54.5% 11
DMPG '19 S6 - A Strange Array DMOPC 15p 14.6% 37
ECOO '19 R2 P3 - Ribbon ECOO 15p 19.8% 13
Mock CCO '19 Contest 1 Problem 4 - A Chemistry Problem Mock CCO 15p 14.9% 13
Mock CCO '19 Contest 1 Problem 6 - A Geometry Problem Mock CCO 15p 27.2% 16
Mock CCO '19 Contest 2 Problem 1 - A Dynamic Connectivity Problem Mock CCO 15p 31.3% 70
Mock CCO '19 Contest 2 Problem 2 - A Simulation Problem Mock CCO 15p 10.7% 8
Mock CCO '19 Contest 2 Problem 3 - A Cactus Problem Mock CCO 15p 5.5% 5
ECOO '19 R3 P3 - Wall ECOO 15p 44.2% 4
ECOO '19 R3 P4 - Network ECOO 15p 0.7% 1
A Floyd-Warshall Problem Uncategorized 15 1.6% 2
Triway Cup '19 Summer D - Napping Seasonal 15p 4.1% 6
CCO '19 P5 - Marshmallow Molecules CCO 15p 26.5% 128