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Problem Category Points ▾ AC % Users
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 50.0% 2
Google Code Jam '10 Round 1A Problem A - Rotate Google Code Jam 7 44.4% 4
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 66.7% 5
Google Code Jam '13 Qualification Round Problem B - Lawnmower Google Code Jam 7p 50.0% 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 21.1% 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 30.6% 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 59.1% 133
DMOPC '22 Contest 5 P2 - Absolutely Even DMOPC 7p 19.3% 164
EGOI '23 P1 - Inflation EGOI 7p 27.6% 129
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 36.3% 25
COCI '23 Contest 2 #2 Pingvin COCI 7p 47.1% 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% 167
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 19.4% 42
COCI '23 Contest 4 #2 Knjige COCI 7p 23.1% 40
CCC '24 J5 - Harvest Waterloo CCC 7p 38.3% 317
ECOO '13 R1 P1 - Take a Number ECOO 5p 27.2% 1176
ECOO '13 R1 P2 - The Luhn Algorithm ECOO 5p 48.1% 364
CCC '96 S1 - Deficient, Perfect, and Abundant CCC 5 32.3% 1889
CCC '13 S1 - From 1987 to 2013 CCC 5 45.7% 3905
CCC '14 S1 - Party Invitation CCC 5 47.1% 3516
CCC '14 S2 - Assigning Partners CCC 5 33.2% 2837
CCC '13 J4 - Time on task CCC 5 44.5% 3001
Lexicographically Least Substring Uncategorized 5 46.0% 616
ECOO '14 R1 P1 - Martian Time ECOO 5p 26.5% 76
List Minimum (Hard) Uncategorized 5 35.9% 1660
The Mirror Uncategorized 5 33.3% 676
German Nouns Uncategorized 5 56.4% 428
Next Prime Classics 5 19.9% 2170
CCC '98 S1 - Censor CCC 5 37.5% 1466
Encode Uncategorized 5 28.4% 245