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Problem Category Points ▴ AC % Users
WOSS Dual Olympiad 2022 S2: Festive Card Game Seasonal 7p 19.8% 62
WOSS Dual Olympiad 2022 J4: Fire on Christmas Day Seasonal 7p 13.7% 34
EGOI '21 P1 - Zeros EGOI 7p 20.8% 71
Mock CCC '23 2 S2 - Keenan Hates Triangles Mock CCC 7p 2.3% 38
COCI '22 Contest 3 #2 Dirigent COCI 7p 28.2% 84
CCC '23 S2 - Symmetric Mountains CCC 7p 26.6% 813
Max's Anger Contest Series 2 P3 - Array Anger Seasonal 7p 43.3% 153
Google Code Jam '08 Qualification Round Problem C - Train Timetable Google Code Jam 7p 50.0% 4
Google Code Jam '08 Round 1A Problem B - Milkshakes Google Code Jam 7p 66.7% 2
Google Code Jam '09 Qualification Round Problem C - Welcome to Code Jam Google Code Jam 7p 19.0% 4
Google Code Jam '10 Qualification Round Problem A - Fair Warning Google Code Jam 7p 40.0% 2
Google Code Jam '10 Round 1A Problem A - Rotate Google Code Jam 7 50.0% 5
Google Code Jam '11 Qualification Round Problem B - Candy Splitting Google Code Jam 7p 57.1% 4
Google Code Jam '12 Round 1A Problem B - Kingdom Rush Google Code Jam 7p 22.2% 2
Google Code Jam '13 Round 1A Problem A - Bullseye Google Code Jam 7p 16.7% 4
Google Code Jam '13 Round 1A Problem B - Manage your Energy Google Code Jam 7p 11.1% 2
Google Code Jam '13 Qualification Round Problem A - Tic-Tac-Toe-Tomek Google Code Jam 7p 72.7% 6
Google Code Jam '13 Qualification Round Problem B - Lawnmower Google Code Jam 7p 40.0% 2
Google Code Jam '14 Round 1A Problem A - Charging Chaos Google Code Jam 7p 66.7% 2
Google Code Jam '15 Round 1A Problem B - Haircut Google Code Jam 7p 37.5% 3
Google Code Jam '16 Round 1A Problem B - Rank and File Google Code Jam 7p 66.7% 2
Google Code Jam '18 Qualification Round Problem B - Trouble Sort Google Code Jam 7p 17.8% 17
Google Code Jam '21 Qualification Round Problem B - Moons and Umbrellas Google Code Jam 7p 46.2% 6
Google Code Jam '21 Qualification Round Problem C - Reversort Engineering Google Code Jam 7p 27.5% 9
Google Code Jam '21 Round 1A Problem A - Append Sort Google Code Jam 7p 35.0% 5
Waterloo 2001 Winter D - Division Waterloo Local 7 21.1% 4
Waterloo 2001 Winter B - Tight words Waterloo Local 7 66.7% 4
Waterloo 2013 Fall B - Java vs. Scheme Smackdown Waterloo Local 7 17.6% 3
Waterloo 2001 Fall 1 E - A Multiplication Game Waterloo Local 7 16.1% 3
UACC 1 P3 - Cheeky Checkers Uncategorized 7 60.1% 141
DMOPC '22 Contest 5 P2 - Absolutely Even DMOPC 7p 19.3% 164
EGOI '23 P1 - Inflation EGOI 7p 27.9% 132
Waterloo 2023 Fall D - Reptilian Communism Waterloo Local 7 25.4% 26
Amplitude Hackathon '23 Problem 4 - Frequency Queries Uncategorized 7p 15.3% 16
Amplitude Hackathon '23 Problem 5 - Partition Assignment Uncategorized 7p 22.5% 19
WOSS Dual Olympiad 2023 Team Round P2: Holding Eggnog Uncategorized 7 35.3% 26
COCI '23 Contest 2 #2 Pingvin COCI 7p 46.1% 36
WOSS Dual Olympiad 2023 J3/S1: Moving Sand Uncategorized 7 38.2% 114
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun Uncategorized 7p 23.7% 168
Mock CCC '24 Contest 1 S2 - Owen the Toucan Mock CCC 7p 33.1% 188
UHCC1 P5 - Binary Triangles Uncategorized 7p 30.2% 40
UHCC1 P4 - Manhattan Distance Uncategorized 7 19.2% 42
COCI '23 Contest 4 #2 Knjige COCI 7p 22.3% 40
CCC '24 J5 - Harvest Waterloo CCC 7p 37.2% 341
ECOO '13 R1 P4 - Coupon Day ECOO 10p 34.7% 24
Binary Indexed Tree Test Data Structure Tests 10p 28.8% 741
Disjoint Set Test Data Structure Tests 10 37.0% 884
CCC '13 S3 - Chances of Winning CCC 10 41.2% 1364
The Third Cellar Uncategorized 10 27.0% 323
CCC '05 J5 - Bananas CCC 10 21.6% 1468