Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▴ Users
COI '15 #3 Relay COCI 30p 20.7% 5
COI '15 #4 Torrent COCI 25p 35.2% 22
COI '13 #1 CSS COCI 20p 7.7% 8
DMOPC '21 Contest 7 P6 - Rainbow Subgraphs DMOPC 30p 14.6% 8
COI '10 #1 Sort COCI 10p 19.6% 14
COI '10 #2 Telka COCI 12p 37.5% 17
COI '10 #3 Rijeka COCI 10p 34.3% 20
DMOPC '21 Contest 7 P1 - Chika Grids DMOPC 5p 26.6% 285
COI '09 #4 Roboti COCI 25p 0.0% 0
COI '10 #4 Kamion COCI 30p 20.0% 1
COI '11 #1 Kampanja COCI 20p 26.8% 20
COI '11 #2 Mjesec COCI 30p 6.5% 1
DMOPC '21 Contest 7 P3 - Whack-an-Ishigami DMOPC 12p 15.5% 82
COI '11 #3 Setnja COCI 25p 50.0% 2
COI '11 #4 Trampolin COCI 17 20.0% 7
BPC 1 S5 - Temple Uncategorized 25p 7.2% 10
COI '13 #2 Histogrami COCI 30p 11.1% 1
BPC 1 S6 - Painters Uncategorized 30p 9.0% 9
BPC 1 J4 - Assignment of the Year Uncategorized 10p 10.0% 46
BPC 1 J3 - Group Project Uncategorized 5 43.7% 219
COI '10 #5 Lovci COCI 35p 23.5% 1
COI '13 #3 Mostovi COCI 30p 12.0% 8
COI '13 #4 Nizovi COCI 20p 10.2% 11
COI '14 #1 Čvenk COCI 17p 25.0% 3
COI '14 #4 Sir COCI 25p 27.9% 9
COI '14 #3 Ogledala COCI 30p 22.2% 2
COI '14 #2 Kovanice COCI 15p 12.1% 19
Yet Another Contest 3 P2 - Work Experience YAC 10p 21.2% 68
April Fools' Day Contest 1 P1 - Sample Case Uncategorized 0 55.9% 228
April Fools' Day Contest 1 P2 - Sample Case Uncategorized 0 24.2% 150
April Fools' Day Contest 1 P3 - Author Uncategorized 0 47.7% 189
April Fools' Day Contest 1 P4 - Choosing Choosily Uncategorized 0p 44.2% 210
April Fools' Day Contest 1 P5 - Definition Uncategorized 0 40.5% 183
April Fools' Day Contest 1 P6 - April Fools' Day (BOJ Edition) Uncategorized 0 3.0% 142
April Fools' Day Contest 1 P7 - Half-Plane Intersection Uncategorized 0 3.2% 71
April Fools' Day Contest 1 P8 - NP-Hard Uncategorized 0 5.7% 25
BPC 1 S1 - Homework Questions Uncategorized 5 17.1% 157
Yet Another Contest 3 P3 - Topography YAC 15p 2.4% 17
Yet Another Contest 3 P4 - Rumour YAC 15p 26.2% 69
Another Contest 9 Problem 1 - Black Room Boy ACC 3 53.2% 167
Another Contest 9 Problem 3 - Sun & Moon ACC 12 22.5% 32
Yet Another Contest 3 P5 - No More Thieves YAC 25p 12.6% 7
Another Random Contest 1 P6 - Smash Bros Uncategorized 15p 20.3% 15
Another Random Contest 1 P5 - A Strange Country Uncategorized 15p 14.9% 45
Another Random Contest 1 P3 - Physics Olympics Uncategorized 7p 31.3% 32
Another Random Contest 1 P1 - Chessgame Uncategorized 5p 29.3% 75
Another Random Contest 1 P4 - Bracket Query Uncategorized 15p 44.3% 34
Another Random Contest 1 P2 - Two Sequences Uncategorized 7p 18.9% 43
COCI '21 Contest 6 #1 Med COCI 5p 40.1% 58
COCI '21 Contest 6 #2 Zemljište COCI 10p 8.7% 34