Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
IOI '10 P6 - Traffic Congestion IOI 10p 18.2% 94
VM7WC '16 #2 Gold - GGG VM7WC 15 18.2% 311
COCI '14 Contest 7 #2 Kriza COCI 7p 18.2% 59
DMOPC '20 Contest 5 P2 - On The Clock DMOPC 7p 18.2% 247
CCO '08 P5 - Candy CCO 7p 18.2% 235
DMOPC '17 Contest 3 P2 - Towers of Hanoi DMOPC 7p 18.2% 82
IOI '11 P3 - Rice Hub IOI 15p 18.2% 125
Mock CCC '15 S1 - Dupvoting Mock CCC 5p 18.3% 151
Mock CCC '15 J4 - Vox in Box Mock CCC 7p 18.3% 79
COCI '15 Contest 4 #5 Galaksija COCI 15p 18.3% 114
Mock CCC '18 Contest 5 S4 - Sparse Binary String Counting Mock CCC 10p 18.3% 92
APIO '14 P1 - Palindromes APIO 25p 18.3% 59
COCI '18 Contest 5 #4 Parametriziran COCI 15p 18.3% 34
DMPG '15 B4 - Maximum Product DMOPC 7p 18.3% 321
DMOPC '19 Contest 1 P3 - Simple Math DMOPC 12 18.3% 43
CCC '11 S5 - Switch CCC 12p 18.3% 414
Mock CCC '21 S5 - Clique and Independent Set Mock CCC 25p 18.3% 11
Factorial Calculator TLE 7p 18.3% 79
Skyscrapers Uncategorized 15p 18.3% 60
IOI '13 P5 - Robots IOI 20p 18.3% 90
CEOI '17 P6 - Chase CEOI 30p 18.3% 21
Valentine's Day '18 J3 - Are they cute? Mock CCC 5p 18.3% 166
CCC '22 S3 - Good Samples CCC 10p 18.3% 655
New Year's '19 P8 - Best Hat in Town II Seasonal 25 18.3% 34
DMOPC '18 Contest 5 P3 - A Familiar Problem DMOPC 7p 18.3% 425
DMOPC '18 Contest 2 P2 - Booster Cushions DMOPC 5p 18.3% 188
Waterloo 2022 Fall E - Water Flow Waterloo Local 12 18.3% 7
Mock CCO '18 Contest 2 Problem 6 - Victor's Cubes Mock CCO 20p 18.3% 9
An Animal Contest 3 P5 - Monkey Canoe AAC 12p 18.3% 133
Sales Uncategorized 20p 18.4% 64
Mock CCC '22 Contest 2 J4 - Hockey Bracket Mock CCC 7p 18.4% 194
Mock CCC '15 S3 - The Tachyon Trap Mock CCC 12p 18.4% 65
IOI '13 P1 - Dreaming (Standard I/O) IOI 15p 18.4% 532
RGPC '18 P4 - Higgs Uncategorized 15p 18.4% 40
APIO '09 P2 - The Siruseri Convention Centre APIO 25p 18.4% 65
CCOQR '16 - Through A Maze Darkly CCC 20p 18.4% 104
Inaho III Uncategorized 17p 18.4% 31
DMPG '15 G2 - 1-String B2-VPG Representation of Planar Graphs DMOPC 15p 18.4% 30
ICPC NAQ 2016 K - Robotopia ICPC 5 18.4% 24
Valentine's Day '19 J4 - Flowers Uncategorized 5 18.4% 67
Mynerva Olympiads School 7p 18.4% 79
Bubble Cup V8 B Bribes Bubble Cup 17 18.4% 55
Fixing Shirts Uncategorized 15 18.4% 24
Another Contest 5 Problem 2 - Great Graffiti ACC 5p 18.5% 217
IOI '11 P2 - Race IOI 17p 18.5% 207
COCI '08 Contest 6 #5 Dostava COCI 17p 18.5% 72
New Year's '17 P1 - Mr. N and Presents Seasonal 7p 18.5% 274
Mock CCC '19 Contest 1 J4 - Pusheen Plays Neko Atsume Mock CCC 3p 18.5% 295
GlobeX Cup '19 J4 - Winni's Lonely Card Game Uncategorized 5p 18.5% 62
CCC '10 S3 - Firehose CCC 15p 18.5% 649