Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
WC '95 P5 - Factorial Power Woburn Challenge 5 28.3% 130
WC '96 P1 - Fishes in a Tank Woburn Challenge 5 25.9% 42
WC '96 P2 - Row and Column Woburn Challenge 7 13.2% 35
WC '96 P3 - Hidden Geography Woburn Challenge 5 32.2% 122
WC '96 P5 - Plentiful Paths Woburn Challenge 7 36.8% 193
WC '96 P6 - Bases Multiplication Woburn Challenge 5 41.8% 260
WC '97 P1 - Searching Quickly Woburn Challenge 10 30.8% 11
WC '97 P2 - Power of Cryptography Woburn Challenge 20 12.1% 12
WC '97 P3 - Stacks of Flapjacks Woburn Challenge 15p 31.4% 8
WC '97 P4 - Typing Woburn Challenge 5 30.9% 268
WC '97 P5 - Encoding Grid Woburn Challenge 20 6.3% 1
WC '98 P1 - Optical Recognition Woburn Challenge 12 21.1% 4
WC '98 P2 - The Hutts Strike Back Woburn Challenge 10 26.1% 10
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% 149
WC '99 P1 - The Matrix Woburn Challenge 7 34.3% 46
WC '99 P2 - Mission Impossible Woburn Challenge 7 18.5% 62
WC '99 P3 - The Godfather Woburn Challenge 5 28.8% 55
WC '99 P4 - Goldfinger Woburn Challenge 5 34.1% 103
WC '99 P5 - Good Will Hunting Woburn Challenge 5 16.8% 88
WC '99 P6 - Fight Club Woburn Challenge 10 24.3% 39
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 47.1% 6
WC '99 Suicidal P4 - Good Ethan Hunt Woburn Challenge 15 19.4% 21
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 14.6% 10
ACM-ICPC World Finals 2007 Problem J - Tunnels ICPC 40 28.0% 13
Willie's Fan Club Uncategorized 7 38.1% 41
Word Counting Uncategorized 10 10.1% 10
Guess the Wordle Uncategorized 10 17.6% 6
Word Wrap Cypher Uncategorized 7 36.6% 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 49.7% 311
WOSS Dual Olympiad 2021 J2/S1: Secret Formula Seasonal 3 64.9% 277
WOSS Dual Olympiad 2021 J3: Frisbee Golf Seasonal 5p 26.2% 233
WOSS Dual Olympiad 2021 S3: Late for Class! Seasonal 10p 27.1% 68
WOSS Dual Olympiad 2022 J1: Holiday Gifting Seasonal 3 55.9% 267
WOSS Dual Olympiad 2022 J2: Counting Christmas Trees Seasonal 3 38.2% 219
WOSS Dual Olympiad 2022 J3/S1: Christmas List Seasonal 5p 59.3% 157
WOSS Dual Olympiad 2022 J4: Fire on Christmas Day Seasonal 7p 13.7% 34
WOSS Dual Olympiad 2022 S2: Festive Card Game Seasonal 7p 19.9% 65
WOSS Dual Olympiad 2022 S3: Sightseeing in the North Pole Seasonal 12 16.9% 23