Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users ▴
DMOPC '18 Contest 5 P3 - A Familiar Problem DMOPC 7p 18.3% 425
DMOPC '19 Contest 4 P0 - Yikes DMOPC 3p 48.3% 425
Mock CCC '14 S3 - Spreadsheet Sorting Mock CCC 7 49.0% 425
Riolku's Mock CCC S1 - Word Bot Mock CCC 3p 32.2% 426
String Finding Uncategorized 5 15.6% 428
MWC '15 #2 P2: Towering Towers MWC 10p 18.1% 430
COCI '07 Contest 4 #2 Veci COCI 5 49.1% 430
Another Sorting Uncategorized 5p 36.1% 430
German Nouns Uncategorized 5 56.6% 432
GFSSOC '14 Winter J3 - Waiting GFSSOC 3p 51.8% 432
DMOPC '16 Contest 2 P2 - Ebola Outbreak DMOPC 7p 20.5% 432
DMOPC '17 Contest 2 P0 - Secrets DMOPC 3 33.3% 432
Troubling Triangles Uncategorized 7 28.4% 433
TSOC '16 Contest 1 #1 - Vasile and Haircuts TSOC 3 45.4% 433
IOI '06 P1 - Deciphering the Mayan Writing IOI 7p 39.5% 433
BPC 1 J1 - Facial Recognition Uncategorized 3 59.0% 433
Cheerio Contest 3 P1 - Wet Floor Uncategorized 5p 47.3% 434
COCI '07 Contest 3 #1 Cetiri COCI 3 45.1% 436
DMOPC '20 Contest 3 P1 - Present Checking DMOPC 5p 50.0% 436
COI '06 #1 Patrik COCI 12 24.6% 437
DWITE '08 R3 #2 - Wordcount++ DWITE 5 35.6% 437
DMOPC '18 Contest 2 P1 - Pumpkin Patches DMOPC 3 57.8% 437
DMOPC '21 Contest 1 P1 - Partial Game DMOPC 5p 29.2% 437
CCC '05 S3 - Quantum Operations CCC 10p 34.8% 439
GFSSOC '15 Fall Practice P1 - Bruno and Trig GFSSOC 3p 37.8% 442
ACM U of T Tryouts C3 A - A Research Project ICPC 3 50.5% 442
2spooky4me Uncategorized 7 11.5% 443
IOI '07 P4 - Miners IOI 15p 21.2% 444
DMOPC '19 Contest 5 P2 - Charlie's Crazy Conquest DMOPC 5 19.3% 444
CCC '24 S2 - Heavy-Light Composition CCC 5p 54.9% 445
DMPG '15 S5 - Black and White DMOPC 12p 25.2% 446
DMOPC '14 Contest 2 P5 - Sawmill Scheme DMOPC 10p 20.8% 447
BlueBook - Sieve BlueBook 5 59.1% 447
BlueBook - Digits and Sums BlueBook 3 54.6% 447
DMOPC '20 Contest 5 P1 - Home Row DMOPC 3 34.9% 447
BlueBook - Max BlueBook 3 21.1% 448
DMOPC '17 Contest 3 P1 - An Early Christmas Present DMOPC 3p 62.4% 449
Educational DP Contest AtCoder K - Stones Uncategorized 10 53.1% 451
VM7WC '16 #2 Silver - GG VM7WC 5 28.3% 452
ECOO '21 P1 - Many Messages ECOO 3p 29.0% 452
An Animal Contest 7 P1 - Squirrnect 4 AAC 3 21.5% 452
CCC '14 S5 - Lazy Fox CCC 20p 17.9% 456
CCC '12 S4 - A Coin Game CCC 15 27.0% 457
VMSS Pre-Windsor P7 - Going Back to the Definitions Uncategorized 7 26.2% 458
VM7WC '16 #3 Gold - Hello, Officer. VM7WC 10 42.1% 460
Educational DP Contest AtCoder G - Longest Path Uncategorized 10 47.0% 462
Educational DP Contest AtCoder L - Deque Uncategorized 10 54.7% 463
CCC '22 J5 - Square Pool CCC 10p 20.5% 464
VMSS '15 #4 - Frank and Roads VM7WC 10 36.0% 465
DMOPC '15 Contest 3 P1 - Quality Scenes DMOPC 3p 17.6% 466