Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▾ Users
CTSC '15 P5 - Calendar Management China NOI 25 33.3% 1
Singularity Cup P5 - Perfect Matrix Uncategorized 20 21.7% 48
Singularity Cup P4 - Staircase Sum Uncategorized 17p 13.3% 65
Singularity Cup P6 - Explosive Breakout Uncategorized 30p 19.7% 15
NOI '17 P4 - Game China NOI 25p 16.7% 1
NOI '17 P5 - Vegetables China NOI 25p 66.7% 4
NOI '17 P6 - Magic China NOI 40p 40.0% 2
EGOI '23 P1 - Inflation EGOI 7p 27.9% 135
EGOI '23 P2 - Padel Prize Pursuit EGOI 10p 18.5% 32
EGOI '23 P3 - Find the Box EGOI 17p 16.4% 17
EGOI '23 P4 - Bikes vs Cars EGOI 20p 11.2% 14
EGOI '23 P6 - Candy EGOI 12p 22.4% 39
EGOI '23 P7 - Sopsug EGOI 17p 6.3% 14
NOI '17 P1 - Integers China NOI 20p 29.1% 10
NOI '17 P2 - Queue China NOI 20p 45.3% 9
NOI '17 P3 - Pool China NOI 30p 38.9% 3
JOI '23 Open P1 - Ancient Machine 2 JOI 20p 1.4% 1
JOI '23 Open P2 - Cell Automaton JOI 40p 0.0% 0
JOI '23 Open P3 - Garden JOI 12p 9.4% 5
NOI '23 P1 - Square Coloring China NOI 17p 52.6% 10
NOI '23 P2 - Osmanthus Tree China NOI 25p 26.3% 5
NOI '23 P3 - Depth First Search China NOI 35p 37.5% 2
NOI '23 P4 - Trade China NOI 20p 46.7% 7
NOI '23 P5 - String China NOI 25p 18.9% 7
NOI '23 P6 - Merge the Books China NOI 30p 16.7% 3
IOI '23 P1 - Closing Time IOI 25p 4.5% 20
IOI '23 P2 - Longest Trip IOI 25p 3.1% 13
IOI '23 P3 - Soccer Stadium IOI 30p 4.7% 12
IOI '23 P4 - Beech Tree IOI 35p 4.9% 3
IOI '23 P5 - Overtaking IOI 25p 6.1% 11
IOI '23 P6 - Robot Contest IOI 40p 3.4% 2
Singularity Cup P3 - Interplanetary Travel Uncategorized 15p 9.4% 98
Waterloo 2023 Fall A - Black Frame Waterloo Local 12 25.8% 14
Waterloo 2023 Fall B - Orb Tent Waterloo Local 17 30.0% 11
Waterloo 2023 Fall C - Whitewater Rafting Waterloo Local 17 26.2% 14
Waterloo 2023 Fall D - Reptilian Communism Waterloo Local 7 25.4% 26
Waterloo 2023 Fall E - Loose Goose Waterloo Local 25 4.5% 1
HHPC1 P6 - Yarn Street's Strategic Shopping Uncategorized 20p 8.4% 5
HHPC1 P3 - Yonder Ridge Uncategorized 12p 11.0% 30
HHPC1 P5 - Yunity Grouping Objects Uncategorized 17p 34.1% 12
Amplitude Hackathon '23 Problem 1 - Company Values Uncategorized 0p 30.4% 49
Amplitude Hackathon '23 Problem 3 - Dedupe Uncategorized 5p 53.3% 38
Amplitude Hackathon '23 Problem 2 - Gigatron Lag Uncategorized 3p 26.2% 38
Amplitude Hackathon '23 Problem 4 - Frequency Queries Uncategorized 7p 15.3% 16
Amplitude Hackathon '23 Problem 6 - Journeys Uncategorized 10p 26.4% 12
DMOPC '23 Contest 1 P5 - Perfect Matching DMOPC 25p 11.5% 14
Amplitude Hackathon '23 Problem 5 - Partition Assignment Uncategorized 7p 22.5% 19
WOSS Dual Olympiad 2023 Team Round P1: Combining Candy Canes Uncategorized 5 32.0% 47
WOSS Dual Olympiad 2023 Team Round P2: Holding Eggnog Uncategorized 7 35.3% 26
UACC 1 P4 - Converging Streams Uncategorized 10 50.6% 68