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Problem Category ▴ Points AC % Users
A Plus B CBOJ 5p 55.0% 48
Hello, World! CBOJ 1 9.4% 64
Palindrome 1 - Check Palindrome CBOJ 3 39.3% 31
Palindrome 2 - Longest Palindrome (Easy) CBOJ 7 23.7% 11
Palindrome 3 - Longest Palindrome (Hard) CBOJ 15 17.5% 5
Subarray Sums CBOJ 7p 9.4% 8
Count Divisors (Extreme) CBOJ 15 8.2% 7
CBOJ Welcome Contest Problem 2 - Eating Candies CBOJ 5p 41.9% 27
CBOJ Welcome Contest Problem 4 - Remainder Table CBOJ 15p 6.0% 6
CBOJ Welcome Contest Problem 3 - Octomesters CBOJ 7p 24.0% 17
CBOJ Welcome Contest Problem 1 - Symmetric Encryption CBOJ 5p 30.0% 24
CBOJ Fall Contest Problem 4 - Taking an L CBOJ 12p 29.3% 7
CBOJ Fall Contest Problem 2 - Raking Leaves CBOJ 7p 27.5% 20
CBOJ Fall Contest Problem 3 - Maximum Social Distance CBOJ 12p 14.4% 11
CBOJ Fall Contest Problem 1 - Rule of Four CBOJ 7p 31.1% 17
CBOJ Winter Contest Problem 4 - Paint.NET CBOJ 12p 16.5% 14
CBOJ Winter Contest Problem 3 - Stacking Spacers CBOJ 12p 23.9% 16
CBOJ Winter Contest Problem 1 - Cyclic Isomers CBOJ 7p 47.7% 19
CBOJ Winter Contest Problem 2 - Suitcase Packing CBOJ 7p 21.7% 16
CBOJ Winter Contest Problem 2 - Suitcase Packing (Hard) CBOJ 10 17.6% 9
CBOJ Exec Selection Contest Problem 2 - Pretty Sequence CBOJ 15p 6.3% 6
CBOJ Exec Selection Contest Problem 4 - Bob and Books CBOJ 15p 12.1% 6
CBOJ Exec Selection Contest Problem 1 - Networking CBOJ 12p 27.1% 12
CBOJ Exec Selection Contest Problem 3 - Lucky Modulo 7 CBOJ 15p 24.7% 7
CBOJ Exec Selection Contest Problem 5 - Interesting Words CBOJ 15p 24.7% 5
CBOJ Exec Selection Contest Problem 6 - Cult CBOJ 17p 16.4% 4
Zeyu and Addition CBOJ 5 42.9% 13
Zeyu and Prefixes CBOJ 5 28.4% 12
Supply Drop CBOJ 20p 19.2% 1
Zeyu and Fireworks CBOJ 12p 17.1% 3
CBOJ 2022 Spring Contest Problem 2 - Allen's Asparagus CBOJ 5 15.2% 8
CBOJ 2022 Spring Contest Problem 5 - Draw me a Mountain Range CBOJ 17p 43.8% 3
CBOJ 2022 Spring Contest Problem 1 - KMP CBOJ 3 35.7% 18
CBOJ 2022 Spring Contest Problem 4 - Allen's Automata CBOJ 15p 12.1% 5
CBOJ 2022 Spring Contest Problem 3 - Martin's Monochromatic Marbles CBOJ 7p 29.8% 6
A CCC Preparation Problem CBOJ 1 32.9% 19
Mountain, Valley And Repeat CBOJ 17 42.3% 2
CBOJ 2023 Welcome Contest Problem 1 - Soccer League CBOJ 3 52.4% 11
The Perfect Gift CBOJ 7p 30.6% 5
CBOJ 2023 Welcome Contest Problem 4 - A Dream Problem CBOJ 10 13.0% 5
CBOJ 2023 Welcome Contest Problem 2 - Algebra Homework CBOJ 3 71.4% 10
CBOJ 2023 Welcome Contest Problem 3 - Finding "Amis" CBOJ 5 44.0% 10
Numbers On A Whiteboard CBOJ 10 19.0% 3
Menorah CBOJ 5 57.9% 11
Days To Break CBOJ 3 77.8% 14
Snow Removal CBOJ 5 23.7% 8
Santa's Route CBOJ 10 15.6% 3
CCC '19 J5 - Rule of Three CCC 15p 40.0% 8
CCC '15 J5 - π-day CCC 15p 44.2% 18
CCC '03 S5 - Trucking Troubles CCC 15p 35.0% 7