Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
WC '97 P5 - Encoding Grid Woburn Challenge 20 6.3% 1
WC '98 P1 - Optical Recognition Woburn Challenge 12 22.2% 4
WC '98 P2 - The Hutts Strike Back Woburn Challenge 10 45.8% 9
WC '98 P3 - Do or Do Not Woburn Challenge 10 34.3% 22
WC '98 P4 - GATTACA Woburn Challenge 20p 7.3% 6
WC '98 P5 - Y2K Woburn Challenge 10 34.3% 32
WC '98 P6 - Return of the Plachta Woburn Challenge 5 23.9% 148
WC '99 P1 - The Matrix Woburn Challenge 7 34.3% 46
WC '99 P2 - Mission Impossible Woburn Challenge 7 18.9% 58
WC '99 P3 - The Godfather Woburn Challenge 5 28.7% 54
WC '99 P4 - Goldfinger Woburn Challenge 5 33.8% 101
WC '99 P5 - Good Will Hunting Woburn Challenge 5 16.8% 88
WC '99 P6 - Fight Club Woburn Challenge 10 23.8% 38
WC '99 P7 - The Rock Woburn Challenge 15 22.3% 28
WC '99 Suicidal P1 - World Woburn Challenge 17p 16.9% 27
WC '99 Suicidal P2 - Good Hunting Will Woburn Challenge 20p 0.4% 1
WC '99 Suicidal P3 - Message Woburn Challenge 12 42.9% 5
WC '99 Suicidal P4 - Good Ethan Hunt Woburn Challenge 15 18.4% 19
WC '99 Suicidal P5 - Star Wars Woburn Challenge 15 38.9% 14
WC '99 Suicidal P6 - Wedding Juicer Woburn Challenge 15 16.2% 36
Wesley++ Seasonal 15p 15.2% 10
ACM-ICPC World Finals 2007 Problem J - Tunnels ICPC 40 27.3% 12
When GCD meets XOR Uncategorized 17 25.0% 22
Willie's Fan Club Uncategorized 7 38.1% 41
Word Counting Uncategorized 10 10.3% 10
Guess the Wordle Uncategorized 10 17.6% 5
Word Wrap Cypher Uncategorized 7 36.0% 33
World Tour Contest Problem 1 — Solar Eclipse Seasonal 5 1.5% 16
World Tour Contest Problem 2 — Fireplace Poker Seasonal 5 1.1% 7
World Tour Contest Problem 3 — Translation Seasonal 10p 0.1% 2
World Tour Contest Problem 4 — W Szczebrzeszynie chrząszcz brzmi w trzcinie Seasonal 15p 1.0% 1
WOSS Dual Olympiad 2021 J1: Water Classification Seasonal 3 50.1% 282
WOSS Dual Olympiad 2021 J2/S1: Secret Formula Seasonal 3 64.6% 270
WOSS Dual Olympiad 2021 J3: Frisbee Golf Seasonal 5p 26.2% 232
WOSS Dual Olympiad 2021 S3: Late for Class! Seasonal 10p 27.1% 68
WOSS Dual Olympiad 2022 J1: Holiday Gifting Seasonal 3 56.9% 251
WOSS Dual Olympiad 2022 J2: Counting Christmas Trees Seasonal 3 38.0% 213
WOSS Dual Olympiad 2022 J3/S1: Christmas List Seasonal 5p 58.8% 156
WOSS Dual Olympiad 2022 J4: Fire on Christmas Day Seasonal 7p 13.7% 34
WOSS Dual Olympiad 2022 S2: Festive Card Game Seasonal 7p 19.8% 62
WOSS Dual Olympiad 2022 S3: Sightseeing in the North Pole Seasonal 12 16.9% 23
WOSS Dual Olympiad 2022 Team Round P1: Bobby and His Calculus Test Seasonal 3p 60.0% 77
WOSS Dual Olympiad 2022 Team Round P2: Bobby's Studying Schedule Seasonal 5 58.3% 53
WOSS Dual Olympiad 2022 Team Round P3: Bobby and the Sidewalk Seasonal 10p 30.5% 46
WOSS Dual Olympiad 2023 J1: Minimum Price Uncategorized 3 67.8% 186
WOSS Dual Olympiad 2023 J2: 3 Numbers Uncategorized 5 33.6% 131
WOSS Dual Olympiad 2023 J3/S1: Moving Sand Uncategorized 7 38.7% 120
WOSS Dual Olympiad 2023 S2: Geese Attack Uncategorized 10 12.2% 38
WOSS Dual Olympiad 2023 S3: Flying Uncategorized 15p 24.2% 18
WOSS Dual Olympiad 2023 Team Round P1: Combining Candy Canes Uncategorized 5 33.1% 52