Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▾ Users
CCC '11 S5 - Switch Contest Problems 12p 30.0% 3
Bus Stop Uncategorized 5 29.9% 30
Cezar ICS3 & ICS4 3 29.5% 13
Matrix Test Contest Problems 5 29.4% 12
A Max Problem Contest Problems 3 29.4% 30
TSSPC Contest 1 P4 - Halloween Spooking Seasonal 10p 29.2% 19
TCCC '24 Jan P5 - Hamlet has Fallen TCC Contest 7p 29.2% 3
Dijkstra's Algorithm Test Classics 10 29.1% 17
Huffman Decoding Uncategorized 5 28.9% 30
Add Up Apples Uncategorized 5 28.7% 12
HacKing Uncategorized 7p 28.6% 2
Mock CCC '19 Contest 1 J5 - Best Friends Contest Problems 10p 28.6% 12
Mock CCC '20 Contest 1 J3 - Lost Chocolate Contest Problems 3 28.6% 10
String Searching Contest Problems 3 28.6% 20
The Travelling Salesman Uncategorized 5 28.5% 54
TCCC '23 Nov P2 - Candy Stash TCC Contest 5p 28.3% 12
Date Formatting ICS3 & ICS4 3 28.3% 141
Jonathan Sumabat 4 Uncategorized 7 28.1% 5
Maintaining a Sequence Uncategorized 20p 27.5% 14
TSS '22 CC P4 - Ancient Castle Ruins Contest Problems 10p 27.5% 6
CCC '06 J1 - Canadian Calorie Counting Contest Problems 3 27.1% 15
Mock CCC '20 Contest 1 S4 - Jonathan in Another World 😩 Contest Problems 10 26.9% 7
Overlapping Subarray Uncategorized 5 26.8% 24
TCCC '23 Sept P4 - DNA Lengths TCC Contest 5 26.7% 10
TCCC '24 Jan P2 - Hamlet the Frightening TCC Contest 5 26.7% 3
Continuous Digits Sum Uncategorized 5 26.6% 53
TSSPC Contest 2 P3 - Joe's Dominoes Uncategorized 10p 26.5% 3
The Odd Number Uncategorized 7 26.3% 31
Guessing Game ICS3 & ICS4 3 26.2% 215
The Matrix Uncategorized 5 26.2% 9
TCCC '23 Sept P7 - Da Perfect Burger 2 TCC Contest 7 26.0% 9
TSS '19 CC P3 - Counting Squares Contest Problems 7 25.9% 9
Hackathon 7 - Type Racer Battle (with Naccarato) Seasonal 7 25.8% 16
A Lazy Problem Contest Problems 5 25.4% 31
Zachary's Executive Application Seasonal 8 25.3% 8
RTE '16 S3 - School Traversal Uncategorized 12p 25.0% 7
A Tree Problem Contest Problems 7 25.0% 8
A Subarray Problem 2 Contest Problems 5p 25.0% 16
Volleyball Game ICS3 & ICS4 3 25.0% 5
School Trip ICS3 & ICS4 5 25.0% 16
Password Checker ICS3 & ICS4 3 24.6% 211
Age Demographic Uncategorized 7 24.6% 8
Encryption by Reversal Contest Problems 7 24.6% 10
Hi Lo ICS3 & ICS4 3 24.5% 170
Balanced Reactions Uncategorized 7 24.5% 11
TSSPC Contest 1 P5 - Trick or Trail Seasonal 17p 24.2% 14
Relative Path Uncategorized 7 24.1% 3
Awkward Number Contest Problems 7 24.1% 12
Duty Of Call Contest Problems 10p 24.0% 8
Inversions Uncategorized 12 23.4% 25