Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points ▴ AC % Users
Baltic OI '01 P4 - Knights Baltic OI 17p 14.8% 8
Yet Another Contest 5 P4 - Nils++ YAC 17p 2.5% 7
Waterloo 2022 Fall C - Squaring the Triangle Waterloo Local 17 41.2% 16
Yet Another Contest 7 P4 - Paparazzi YAC 17p 8.2% 46
COCI '22 Contest 1 #3 Berilij COCI 17p 16.4% 16
COCI '22 Contest 2 #3 Lampice COCI 17p 25.5% 34
NOIP '07 P4 - Core of a Tree Net China NOI 17p 10.3% 2
NOIP '22 P3 - Facility Construction China NOI 17p 17.6% 14
DMOPC '22 Contest 4 P5 - Blackboard Game DMOPC 17p 12.2% 36
COCI '22 Contest 3 #3 Baltazar COCI 17p 11.0% 20
DMOPC '22 Contest 4 P4 - Anki Reviews DMOPC 17p 13.7% 36
COCI '22 Contest 4 #3 Bojanje COCI 17p 55.8% 23
COCI '22 Contest 5 #5 Zastave COCI 17p 4.1% 20
Google Code Jam '11 Round 1A Problem C - Pseudominion Google Code Jam 17p 0.0% 0
Google Code Jam '15 Round 1A Problem C - Logging Google Code Jam 17p 50.0% 1
Google Code Jam '18 Round 1A Problem C - Edgy Baking Google Code Jam 17p 27.3% 3
Google Code Jam '21 Round 1A Problem B - Prime Time Google Code Jam 17p 28.1% 7
Google Code Jam '22 Round 3 Problem C - Mascot Maze Google Code Jam 17p 66.7% 3
Wesley's Anger Contest Reject 1 - Stupendous Bowties 2 WAC 17 15.4% 25
ETSR '23 Online Round 2 Problem 4 - Queue Uncategorized 17p 5.0% 15
ETSR '23 Onsite Round 1 Problem 3 - Travel Uncategorized 17p 4.8% 20
Counting Problem Uncategorized 17 45.5% 5
APIO '23 P1 - Cyberland APIO 17p 8.8% 33
CCO '23 P2 - Real Mountains CCO 17p 13.1% 69
CCO '23 P4 - Flip it and Stick it CCO 17p 6.8% 54
DMOPC '22 Contest 5 P4 - Ricochet DMOPC 17p 7.8% 22
Singularity Cup P4 - Staircase Sum Uncategorized 17p 13.3% 65
EGOI '23 P3 - Find the Box EGOI 17p 16.4% 17
EGOI '23 P7 - Sopsug EGOI 17p 6.0% 13
NOI '23 P1 - Square Coloring China NOI 17p 52.6% 10
Waterloo 2023 Fall B - Orb Tent Waterloo Local 17 30.0% 11
Waterloo 2023 Fall C - Whitewater Rafting Waterloo Local 17 26.2% 14
HHPC1 P5 - Yunity Grouping Objects Uncategorized 17p 34.1% 12
DMOPC '23 Contest 1 P4 - Wandering Walk DMOPC 17p 6.4% 54
COCI '23 Contest 2 #3 Dizalo COCI 17p 19.1% 16
COCI '23 Contest 4 #5 Roboti COCI 17p 7.5% 7
COCI '23 Contest 5 #5 Trokut COCI 17p 28.1% 8
MMCC '14 P2 - Kirito Uncategorized 20p 25.9% 152
IOI '14 P3 - Game IOI 20p 27.8% 217
A Times B Uncategorized 20p 15.8% 124
CCC '14 S5 - Lazy Fox CCC 20p 17.9% 456
Halloween '14 P4 - Fox Girls Seasonal 20p 7.0% 54
COCI '14 Contest 1 #6 Kamp COCI 20p 34.8% 142
COCI '14 Contest 2 #5 Šuma COCI 20p 19.0% 64
COCI '14 Contest 2 #4 Bob COCI 20p 29.3% 120
CCC '10 S5 - Nutrient Tree CCC 20p 19.7% 269
GFSSOC '14 Winter S5 - Stardust Snow GFSSOC 20p 12.2% 70
DMOPC '14 Contest 3 P5 - Not Enough Servers! DMOPC 20p 20.2% 208
COCI '14 Contest 4 #6 Stanovi COCI 20p 16.8% 70
Mailing Origami Uncategorized 20 9.1% 67