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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 11.6% 8
CCC '20 S3 - Searching for Strings CCC 15p 15.5% 8
CCC '20 S3 Easy - Searching for Strings CCC 12p 71.8% 8
CCC '21 S1 - Crazy Fencing CCC 5 43.2% 9
CCC '21 S2 - Modern Art CCC 7p 23.4% 8
CCC '21 S3 - Lunch Concert CCC 10p 35.3% 5
CCC '21 S4 - Daily Commute CCC 12p 22.7% 4
CCC '21 S5 - Math Homework CCC 12p 44.4% 3
A CCC Preparation Problem CBOJ 1 53.6% 7
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 25.4% 10
Count Divisors (Extreme) CBOJ 15 3.8% 3
CBOJ Fall Challenge '24 P1 - Building Squares CBOJ 3 39.4% 11
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 44.2% 10
Graph Theory: Shortest Path Club 10 38.6% 8
Graph Theory: Weighted Graph Club 12 17.3% 6
Hello, World! CBOJ 1 37.6% 21
Days To Break CBOJ 3 55.2% 14
Menorah CBOJ 5 40.0% 6
Snow Removal CBOJ 5 26.3% 7
Santa's Route CBOJ 10 17.9% 3
The Perfect Gift CBOJ 7p 30.6% 5
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 87.5% 4
CB Open 2024 Problem 2 - Nikola and the Teslas CBOJ 7 54.5% 4
CB Open 2024 Problem 3 - Another Number Theory Problem CBOJ 7 31.0% 4
CB Open 2024 Problem 4 - A Perfect Contest CBOJ 10 25.8% 3
CB Open 2024 Problem 5 - Stopping Rumours CBOJ 10 37.5% 3
Palindrome 1 - Check Palindrome CBOJ 3 32.3% 14
Palindrome 2 - Longest Palindrome (Easy) CBOJ 7p 26.1% 32
Palindrome 3 - Longest Palindrome (Hard) CBOJ 15 9.0% 4
Public Service Announcement Club 7p 40.6% 10
A Difference Array Problem Club 7p 36.4% 6
Fibonacci 1 Club 5 75.0% 12
Fibonacci 2 Club 7 33.8% 10
Perfectly Even Numbers Club 5 21.8% 11
Perfectly Even Numbers (Extreme) Club 15 12.0% 5
Supply Drop CBOJ 20p 17.4% 1