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Problem Category ▴ Points AC % Users
A Plus B CBOJ 5p 49.7% 33
Hello, World! CBOJ 1 38.8% 44
Palindrome 1 - Check Palindrome CBOJ 3 32.2% 21
Palindrome 2 - Longest Palindrome (Easy) CBOJ 7p 29.0% 50
Palindrome 3 - Longest Palindrome (Hard) CBOJ 15 12.2% 5
Subarray Sums CBOJ 7p 8.6% 4
Count Divisors (Extreme) CBOJ 15 3.4% 3
CBOJ Welcome Contest Problem 2 - Eating Candies CBOJ 5p 38.5% 17
CBOJ Welcome Contest Problem 4 - Remainder Table CBOJ 15p 5.0% 4
CBOJ Welcome Contest Problem 3 - Octomesters CBOJ 7p 17.4% 40
CBOJ Welcome Contest Problem 1 - Symmetric Encryption CBOJ 5p 19.1% 14
CBOJ Fall Contest Problem 4 - Taking an L CBOJ 12p 23.2% 4
CBOJ Fall Contest Problem 2 - Raking Leaves CBOJ 7p 20.5% 13
CBOJ Fall Contest Problem 3 - Maximum Social Distance CBOJ 12p 12.0% 7
CBOJ Fall Contest Problem 1 - Rule of Four CBOJ 7p 35.4% 11
CBOJ Winter Contest Problem 4 - Paint.NET CBOJ 12p 12.7% 7
CBOJ Winter Contest Problem 3 - Stacking Spacers CBOJ 12p 22.2% 8
CBOJ Winter Contest Problem 1 - Cyclic Isomers CBOJ 7p 43.1% 10
CBOJ Winter Contest Problem 2 - Suitcase Packing CBOJ 7p 20.0% 9
CBOJ Winter Contest Problem 2 - Suitcase Packing (Hard) CBOJ 10 20.4% 7
CBOJ Exec Selection Contest Problem 2 - Pretty Sequence CBOJ 15p 5.8% 4
CBOJ Exec Selection Contest Problem 4 - Bob and Books CBOJ 15p 11.0% 4
CBOJ Exec Selection Contest Problem 1 - Networking CBOJ 12p 25.9% 7
CBOJ Exec Selection Contest Problem 3 - Lucky Modulo 7 CBOJ 15p 16.3% 5
CBOJ Exec Selection Contest Problem 5 - Interesting Words CBOJ 15p 19.8% 3
CBOJ Exec Selection Contest Problem 6 - Cult CBOJ 17p 18.2% 2
Zeyu and Addition CBOJ 5 51.7% 10
Zeyu and Prefixes CBOJ 5 16.5% 11
Supply Drop CBOJ 20p 17.4% 1
Zeyu and Fireworks CBOJ 12p 17.1% 3
CBOJ 2022 Spring Contest Problem 2 - Allen's Asparagus CBOJ 5 14.3% 5
CBOJ 2022 Spring Contest Problem 5 - Draw me a Mountain Range CBOJ 17p 30.0% 2
CBOJ 2022 Spring Contest Problem 1 - KMP CBOJ 3 33.8% 13
CBOJ 2022 Spring Contest Problem 4 - Allen's Automata CBOJ 15p 10.1% 4
CBOJ 2022 Spring Contest Problem 3 - Martin's Monochromatic Marbles CBOJ 7p 22.2% 4
A CCC Preparation Problem CBOJ 1 33.8% 16
Mountain, Valley And Repeat CBOJ 17 30.6% 2
CBOJ 2023 Welcome Contest Problem 1 - Soccer League CBOJ 3 50.0% 10
The Perfect Gift CBOJ 7p 28.6% 6
CB Open 2024 Problem 4 - A Perfect Contest CBOJ 10 30.0% 4
CBOJ 2023 Welcome Contest Problem 4 - A Dream Problem CBOJ 10 16.4% 4
CBOJ 2023 Welcome Contest Problem 2 - Algebra Homework CBOJ 3 50.0% 9
CBOJ 2023 Welcome Contest Problem 3 - Finding "Amis" CBOJ 5 33.3% 8
Numbers On A Whiteboard CBOJ 10 19.2% 4
Menorah CBOJ 5 45.0% 9
Days To Break CBOJ 3 60.0% 19
Snow Removal CBOJ 5 22.0% 8
Santa's Route CBOJ 10 17.2% 3
CB Open 2024 Problem 1 - Studying for CS146 CBOJ 7 80.0% 5
CB Open 2024 Problem 3 - Another Number Theory Problem CBOJ 7 27.5% 5