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Problem ▴ Category Points AC % Users
CCC '21 S5 - Math Homework CCC 12p 44.4% 3
CCC '21 S2 - Modern Art CCC 7p 24.2% 9
CCC '20 S3 Easy - Searching for Strings CCC 12p 69.8% 10
CCC '20 S3 - Searching for Strings CCC 15p 15.5% 8
ECOO 2016 R2 P1 - Palindrome Panic ECOO 12 34.4% 4
ECOO 2015 R1 P4 - Neanderthal Numbers ECOO 12 68.4% 5
ECOO 2018 R2 P3 - Factorial ECOO 12 40.9% 6
Making a Necklace Club 10p 31.4% 6
Placing Kings Club 10p 75.8% 10
A Fenwick Tree Problem Club 15p 17.9% 6
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 52.8% 8
Zeyu and Prefixes CBOJ 5 16.5% 10
A Binary Search Problem Club 7 17.2% 8
Allen's Graph Club 7 40.6% 8
Supply Drop CBOJ 20p 17.4% 1
A Dynamic Programming Problem Club 20 3.1% 2
Zeyu and Fireworks CBOJ 12p 18.2% 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 33.9% 10
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
CBOJ 2022 Welcome Contest Problem 3 - Suspicious Cells Club 5 61.9% 9
A CCC Preparation Problem CBOJ 1 57.6% 10
CBOJ 2022 Welcome Contest Problem 2 - First Day of School Club 5 29.0% 8
CBOJ 2022 Welcome Contest Problem 1 - Kernel Bye Computer Science Lovers Club 3 40.0% 11
CBOJ 2022 Welcome Contest Problem 4 - Highest Weight Path Club 7p 16.4% 6
Mountain, Valley And Repeat CBOJ 17 30.6% 2
CBOJ 2023 Welcome Contest Problem 1 - Soccer League CBOJ 3 47.4% 9
The Perfect Gift CBOJ 7p 28.6% 6
CB Open 2024 Problem 4 - A Perfect Contest CBOJ 10 25.0% 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 42.1% 8
Days To Break CBOJ 3 55.6% 18
Snow Removal CBOJ 5 22.0% 8
Santa's Route CBOJ 10 17.2% 3
CBOJ Exec Selection Contest 2 Problem 4 - George's Graph Club 10 40.0% 3
CBOJ Exec Selection Contest 2 Problem 3 - Anita's Array Club 7 20.7% 5
CBOJ Exec Selection Contest 2 Problem 5 - Obligatory Data Structure Problem Club 12 10.0% 3
CBOJ Exec Selection Contest 2 Problem 2 - Patryk and Primes Club 5 26.2% 7
CBOJ Exec Selection Contest 2 Problem 1 - Vowels Club 3 41.2% 10