Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
Triway Cup '19 Summer D - Napping Seasonal 15p 4.1% 6
Triway Cup '19 Summer E - Solar Power Seasonal 5 21.1% 26
Triway Cup '19 Summer F - Race Seasonal 3 36.4% 90
Triway Cup '19 Summer Junior P1 - Getting Snappy Seasonal 5 29.3% 149
Triway Cup '19 Summer Junior P2 - Thanos Knows the Most Seasonal 5 30.2% 70
Triway Cup '19 Summer Junior P3 - Thor Goes for the Papaya Seasonal 5 51.5% 69
CCO '19 P1 - Human Error CCO 10p 31.1% 87
CCO '19 P2 - Sirtet CCO 20p 24.3% 81
Triway Cup '19 Summer H - Time Traveller Imaxblue Seasonal 30 27.8% 28
CCO '19 P3 - Winter Driving CCO 30p 17.1% 66
CCO '19 P4 - Card Scoring CCO 25p 15.3% 68
CCO '19 P5 - Marshmallow Molecules CCO 15p 26.5% 128
CCO '19 P6 - Bad Codes CCO 20p 25.6% 69
Triway Cup '19 Summer I - An Easy Problem Seasonal 5 39.8% 75
Allen's Segments Uncategorized 17 25.6% 73
Bane of Arthropods Uncategorized 20p 62.5% 2
OCC '19 B6 - Fiji water Olympiads School 10p 16.6% 19
OCC '19 B2 - Cinematic Olympiads School 5 16.2% 75
OCC '19 S1 - Floor Planning Uncategorized 3p 32.6% 60
OCC '19 B1 - Darcy_Liu Olympiads School 3 15.2% 159
OCC '19 B5 - Gold Olympiads School 7 12.0% 20
OCC '19 B4 - Bussing Olympiads School 5 22.1% 15
OCC '19 S2 - Rimuru's Number Game Uncategorized 5 27.2% 399
OCC '19 B3 - Difference Olympiads School 5 22.5% 81
APIO '14 P3 - Beads and Wires APIO 25p 24.0% 23
APIO '11 P3 - Guess My Word! APIO 30p 23.9% 8
CEOI '18 P5 - Toys CEOI 10p 30.8% 86
CCO '01 P5 - Fast Food CCO 7 10.1% 29
CCO '01 P6 - Election Night CCO 15 15.2% 47
CCO '02 P1 - Spam CCO 12 49.1% 22
CCO '02 P2 - Game Show Math CCO 12 21.4% 35
CCO '02 P3 - Return To Blind Man's Bluff CCO 12 12.2% 16
CCO '02 P4 - Duathlon CCO 10 11.3% 38
CCO '02 P5 - Connect The Campus CCO 12 31.0% 101
CCO '02 P6 - Pit Stop Strategy CCO 12 52.7% 9
APIO '19 P1 - Strange Device APIO 20 21.1% 50
Educational DP Contest AtCoder T - Permutation Uncategorized 15 57.8% 111
Educational DP Contest AtCoder U - Grouping Uncategorized 15 34.5% 82
Educational DP Contest AtCoder V - Subtree Uncategorized 20 29.5% 97
Educational DP Contest AtCoder W - Intervals Uncategorized 20 49.4% 76
APIO '19 P2 - Bridges APIO 30p 11.0% 47
APIO '19 P3 - Street Lamps APIO 35p 10.9% 30
Back To School '19: FFT Fun Seasonal 20p 14.6% 16
APIO '17 P2 - Travelling Merchant APIO 20p 23.2% 46
Appleby Contest '19 P1 - Darcy's Debilitating Demands Uncategorized 3p 17.7% 315
APTX 4869 Uncategorized 10 44.7% 50
CEOI '19 P4 - Amusement Park CEOI 30p 20.8% 7
CEOI '19 P5 - Magic Tree CEOI 20p 9.3% 34
Please Help Me Uncategorized 15 18.1% 52
Mighty Cactus Uncategorized 7 12.0% 49