Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users ▾
An Animal Contest 3 P2 - Monkey Potato AAC 5p 18.8% 558
DMPG '18 B1 - Pizza Orders DMOPC 3 45.0% 556
CCC '15 S5 - Greedy For Pies CCC 17p 23.5% 555
APIO '10 P1 - Commando APIO 20p 25.7% 554
An Animal Contest 1 P2 - Alpaca Racing AAC 5p 8.1% 549
DMOPC '14 Contest 2 P2 - Cutting Logs DMOPC 5p 38.5% 548
Infinity Uncategorized 3 35.6% 547
GFSSOC '15 Fall J5 - Nightmare-a-thon GFSSOC 10p 32.2% 546
DMOPC '14 Contest 7 P1 - Flare DMOPC 3p 55.7% 546
Longest Increasing Subsequence Classics 10 23.6% 546
BlueBook - Power Base BlueBook 3 39.7% 546
IOI '09 P4 - Raisins IOI 10p 55.4% 543
Back To School '18: Letter Frequency Seasonal 7p 19.0% 543
Valentine's Day '19 J2 - Pink! Uncategorized 3p 60.0% 543
Mock CCC '22 Contest 1 J2 - Biking and Hiking Mock CCC 3 34.9% 543
BSSPC '22 P1 - Bubble Tea Tracker Uncategorized 3 68.4% 541
Fast Factorial Calculator Uncategorized 7 15.9% 540
Halloween '14 P1 - Rabbit Girls Seasonal 3p 21.3% 538
Troubling Times Uncategorized 5p 33.0% 538
DMOPC '19 Contest 4 P1 - Valid Strings DMOPC 5p 35.9% 537
BSSPC '21 J1 - Eggy's New Clothes Uncategorized 3 40.1% 537
IOI '11 P2 - Race (Standard I/O) IOI 17p 15.2% 536
Too Simple Seasonal 7 15.9% 535
DMOPC '14 Contest 1 P5 - Surprise Teleport DMOPC 7p 20.6% 534
Mock CCC '15 J3 - Problem-setting Pandemonium Mock CCC 3p 59.7% 534
VM7WC '15 #1 Bronze - Goon VM7WC 3 38.4% 533
TSS Club Fair 2017 Problem B Uncategorized 7p 21.4% 532
IOI '09 P5 - Garage IOI 7 46.4% 532
BlueBook - Digits BlueBook 3 52.5% 532
IOI '13 P1 - Dreaming (Standard I/O) IOI 15p 18.4% 532
CCC '23 J5 - CCC Word Hunt CCC 10p 24.2% 532
Another Contest 6 Problem 1 - A Plus B (Warmup) ACC 0p 35.0% 531
CCC '10 S4 - Animal Farm CCC 15p 25.6% 529
CCC '06 S3 - Tin Can Telephone CCC 12 20.8% 528
HCI '16 - Oversleep Uncategorized 7p 45.3% 528
IOI '09 P3 - POI IOI 7 28.7% 528
BlueBook - Lower Case BlueBook 3 53.1% 526
DMOPC '20 Contest 1 P1 - Victor Gets Quizzed DMOPC 3 68.9% 525
DMOPC '20 Contest 1 P2 - Victor's Moral Dilemma DMOPC 5 44.3% 523
Waterloo 2017 Winter A - Vera and Outfits Waterloo Local 3 71.8% 522
Appleby Contest '20 P1 - Terrific Triangles Uncategorized 3p 22.2% 521
SAC '22 Code Challenge 3 P1 - Hair Hazards SAC Coding Challenge 3 74.7% 514
TLE '15 P1 - Power Rankings TLE 5p 62.4% 512
COCI '07 Contest 5 #1 Tri COCI 3 41.7% 512
VM7WC '16 #5 Gold - Jayden Studies Trees VM7WC 7 35.5% 511
Appleby Contest '19 P2 - The Love Letter Uncategorized 5p 29.3% 510
Valentine's Day '19 J1 - Rainbow Rating Uncategorized 3 39.3% 509
DMOPC '14 Contest 4 P6 - Save Nagato! DMOPC 10p 24.1% 508
VM7WC '16 #5 Silver - Jayden Eats Chocolate VM7WC 7 30.1% 508
BlueBook - Max is Last BlueBook 3 41.2% 508