Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users ▾
Zipline Bonanza Competitive 5 5.2% 5
LCC/Moose '20 Contest 5 J4 - Alan's Rectangle LCC 7p 3.9% 5
LCC '21 Contest 3 S4 - Nim-metry LCC 12p 8.2% 5
March Break Contest '22 Problem 1 - Bob's Dice Game Competitive 7p 28.0% 5
Tree Centroids Competitive 7 17.2% 5
Jack Frost Uncategorized 10 31.3% 5
LCC '22 Contest 3 S3 - Château LCC 7p 22.4% 5
LCC '22 Contest 3 S4 - Tricks at the Beach LCC 12p 20.0% 5
LCC '22 Contest 4 J3 - Aaron Adjures LCC 5 13.7% 5
LCC '22 Contest 6 S1 - Same Patrick's Day LCC 5 63.6% 5
Othello Competitive 10 26.3% 5
I Hate Ready to Program P7 - Implementation In An Instant Competitive 7p 25.0% 5
LCC '23 Contest 2 J4 - Wild West LCC 7p 17.1% 5
Rated Contest 2 P5 - Ski Cults LCC 15p 26.9% 5
LCC '23 Contest 3 J3 - Snowball Making LCC 5 15.4% 5
LCC '24 Contest 1 S3 - Graham's Neighbourhood LCC 7 17.8% 5
LCC '24 Contest 2 S5 - Wheel of Fate LCC 12p 10.5% 5
CCC '21 S3 - Lunch Concert CCC 10p 38.5% 5
CCC '15 J4 - Wait Time CCC 5p 66.7% 5
CCC '15 S3 - Gates CCC 10p 41.2% 5
WBC '25 P5 - Buying Houses Competitive 10p 50.0% 5
LCC '25 Contest 1 J1 - Bob the Ghost LCC 3 100.0% 5
LCC '25 Contest 1 J2 - Threatening Treats LCC 5p 46.7% 5
LCC '25 Contest 1 S1 - Chaotic Curses LCC 5p 28.0% 5
LCC '25 Contest 2 S2 - Reading LCC 7p 55.6% 5
LCC '25 Contest 3 J1 - Snowflakes LCC 3p 85.7% 5
LCC '25 Contest 3 S1 - Holiday Assembly Line LCC 7p 53.8% 5
LCC '25 Contest 3 S3 - Present Conveyor System LCC 10p 62.5% 5
Longest Palindromic Substring Competitive 10 66.7% 5
Mock CCC '26 J4 - The Hidden Vault Mock CCC 5 18.2% 5
JDCC '16 Contest 5 P3 - Careless Sums JDCC 12p 5.9% 4
An FFT Problem V Uncategorized 35 8.1% 4
JDCC '15 Contest 4 P5 - Pocket Change JDCC 10 67.9% 4
JDCC '15 Contest 5 P3 - Mazecrawler JDCC 10 33.3% 4
LCC '18 Contest 2 S3 - Earth Rumble LCC 7p 18.3% 4
A Road Problem Uncategorized 12 6.8% 4
A New Country Uncategorized 25p 44.4% 4
Dim Sum 4 - I'm Getting Bored Uncategorized 5 32.5% 4
LCC/Moose '18 Contest 3 S5 - Santa's Helper LCC 15 1.4% 4
An FFT Problem VI Classics 30 6.5% 4
Inaho VII Uncategorized 25p 29.4% 4
Inaho VIII Uncategorized 20 50.0% 4
Inaho X Uncategorized 7 77.8% 4
Static Tree Test Classics 20 35.3% 4
Peter and Array ICS3U 5p 45.0% 4
MLE '19 Contest 3 P2 - Depression Uncategorized 12 34.8% 4
Evan's Cube Uncategorized 12p 80.0% 4
Grid Paths Competitive 10p 16.3% 4
ECOO '21 Practice P5 - Rockets ECOO 7p 19.6% 4
ECOO '21 Practice P4 - Noisy Commute ECOO 7p 13.6% 4