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Problem Category Points AC % Users
CCC '19 S3 - Arithmetic Square CCC 15p 6.6% 4
CCC '20 S2 - Escape Room CCC 12p 12.1% 9
CCC '20 S3 - Searching for Strings CCC 15p 15.5% 8
CCC '20 S3 Easy - Searching for Strings CCC 12p 69.8% 10
CCC '21 S1 - Crazy Fencing CCC 5 45.7% 11
CCC '21 S2 - Modern Art CCC 7p 24.2% 9
CCC '21 S3 - Lunch Concert CCC 10p 38.9% 6
CCC '21 S4 - Daily Commute CCC 12p 24.0% 5
CCC '21 S5 - Math Homework CCC 12p 44.4% 3
A CCC Preparation Problem CBOJ 1 57.6% 10
Subarray Sums CBOJ 7p 9.4% 4
ECOO 2015 R1 P4 - Neanderthal Numbers ECOO 12 68.4% 5
ECOO 2016 R2 P1 - Palindrome Panic ECOO 12 34.4% 4
ECOO 2018 R2 P3 - Factorial ECOO 12 40.9% 6
Count Divisors Club 5 25.8% 12
Count Divisors (Extreme) CBOJ 15 3.5% 3
CBOJ Fall Challenge '24 P1 - Building Squares CBOJ 3 31.8% 12
CBOJ Fall Challenge '24 P2 - Collatz Conjecture CBOJ 5 70.0% 6
CBOJ Fall Challenge '24 P3 - Domino Tiling CBOJ 7 46.2% 4
CBOJ Fall Challenge '24 P4 - Factor Graph CBOJ 7 12.5% 3
A Fenwick Tree Problem Club 15p 17.9% 6
Graph Theory: Intro Club 5 26.6% 10
Graph Theory: Connectivity Club 10 42.4% 12
Graph Theory: Shortest Path Club 10 40.4% 10
Graph Theory: Weighted Graph Club 12 16.5% 7
Hello, World! CBOJ 1 34.6% 29
Days To Break CBOJ 3 55.6% 18
Menorah CBOJ 5 42.1% 8
Snow Removal CBOJ 5 22.0% 8
Santa's Route CBOJ 10 17.2% 3
The Perfect Gift CBOJ 7p 28.6% 6
Placing Kings Club 10p 75.8% 10
Mountain, Valley And Repeat CBOJ 17 30.6% 2
Making a Necklace Club 10p 31.4% 6
Numbers On A Whiteboard CBOJ 10 19.2% 4
CB Open 2024 Problem 1 - Studying for CS146 CBOJ 7 88.9% 5
CB Open 2024 Problem 2 - Nikola and the Teslas CBOJ 7 53.8% 5
CB Open 2024 Problem 3 - Another Number Theory Problem CBOJ 7 26.0% 4
CB Open 2024 Problem 4 - A Perfect Contest CBOJ 10 25.0% 4
CB Open 2024 Problem 5 - Stopping Rumours CBOJ 10 33.3% 3
Palindrome 1 - Check Palindrome CBOJ 3 30.6% 15
Palindrome 2 - Longest Palindrome (Easy) CBOJ 7p 28.5% 43
Palindrome 3 - Longest Palindrome (Hard) CBOJ 15 8.9% 4
Public Service Announcement Club 7p 40.5% 12
A Difference Array Problem Club 7p 36.4% 6
Fibonacci 1 Club 5 76.1% 14
Fibonacci 2 Club 7 33.8% 11
Perfectly Even Numbers Club 5 21.8% 11
Perfectly Even Numbers (Extreme) Club 15 12.1% 6
Supply Drop CBOJ 20p 17.4% 1