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Problem Category Points AC % Users ▾
Palindrome 2 - Longest Palindrome (Easy) CBOJ 7p 29.0% 50
Hello, World! CBOJ 1 38.8% 44
A Math Problem (Easy) Club 7 24.9% 41
CBOJ Welcome Contest Problem 3 - Octomesters CBOJ 7p 17.4% 40
A Plus B CBOJ 5p 49.7% 33
A Sum Problem Club 5 20.7% 25
Palindrome 1 - Check Palindrome CBOJ 3 32.2% 21
Sum of Occurrences Club 3 20.4% 19
Days To Break CBOJ 3 60.0% 19
Fibonacci 1 Club 5 73.6% 18
CBOJ Welcome Contest Problem 2 - Eating Candies CBOJ 5p 38.5% 17
CCC '21 S1 - Crazy Fencing CCC 5 46.6% 16
A CCC Preparation Problem CBOJ 1 33.8% 16
WAC - Snow Day Predictor WAC 3 51.4% 15
Count Divisors Club 5 24.8% 14
CBOJ Welcome Contest Problem 1 - Symmetric Encryption CBOJ 5p 19.1% 14
Public Service Announcement Club 7p 37.2% 14
Graph Theory: Connectivity Club 10 32.9% 14
CBOJ 2022 Welcome Contest Problem 1 - Kernel Bye Computer Science Lovers Club 3 44.1% 14
CBOJ Fall Contest Problem 2 - Raking Leaves CBOJ 7p 20.5% 13
Fibonacci 2 Club 7 29.0% 13
CBOJ 2022 Spring Contest Problem 1 - KMP CBOJ 3 33.8% 13
Graph Theory: Intro Club 5 27.1% 12
CCC '15 J5 - π-day CCC 15p 31.3% 12
CBOJ Fall Challenge '24 P1 - Building Squares CBOJ 3 28.9% 12
CBOJ Fall Contest Problem 1 - Rule of Four CBOJ 7p 35.4% 11
Graph Theory: Shortest Path Club 10 41.7% 11
Perfectly Even Numbers Club 5 20.3% 11
Placing Kings Club 10p 64.0% 11
Zeyu and Prefixes CBOJ 5 16.5% 11
CCC '20 S2 - Escape Room CCC 12p 12.4% 10
CBOJ Winter Contest Problem 1 - Cyclic Isomers CBOJ 7p 43.1% 10
CCC '21 S2 - Modern Art CCC 7p 23.0% 10
CCC '20 S3 Easy - Searching for Strings CCC 12p 68.2% 10
Zeyu and Addition CBOJ 5 51.7% 10
CBOJ 2022 Welcome Contest Problem 3 - Suspicious Cells Club 5 63.6% 10
CBOJ 2023 Welcome Contest Problem 1 - Soccer League CBOJ 3 50.0% 10
CBOJ Exec Selection Contest 2 Problem 1 - Vowels Club 3 41.2% 10
CBOJ Winter Contest Problem 2 - Suitcase Packing CBOJ 7p 20.0% 9
Allen's Graph Club 7 31.1% 9
CBOJ 2022 Welcome Contest Problem 2 - First Day of School Club 5 25.6% 9
CBOJ 2023 Welcome Contest Problem 2 - Algebra Homework CBOJ 3 50.0% 9
Menorah CBOJ 5 45.0% 9
Close Matchups Club 7p 23.9% 8
Graph Theory: Weighted Graph Club 12 17.4% 8
CBOJ Winter Contest Problem 3 - Stacking Spacers CBOJ 12p 22.2% 8
CCC '20 S3 - Searching for Strings CCC 15p 15.5% 8
A Binary Search Problem Club 7 15.3% 8
CBOJ 2023 Welcome Contest Problem 3 - Finding "Amis" CBOJ 5 33.3% 8
Snow Removal CBOJ 5 22.0% 8