Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % ▾ Users
CCC '15 S4 - Convex Hull CCC 15p 27.4% 1161
CCC '00 S1 - Slot Machines CCC 5 27.3% 4529
CCC '20 J2 - Epidemiology CCC 3 27.1% 3711
CCC '06 J2 - Roll the Dice CCC 3 27.1% 3040
CCC '12 S4 - A Coin Game CCC 15 27.1% 458
CCC '04 S3 - Spreadsheet CCC 10 27.0% 614
Mock CCC '18 Contest 1 J2 - A Substring Problem Mock CCC 3p 26.9% 334
Mock CCC '19 Contest 1 S2 - Pusheen's Puzzle Present Mock CCC 5p 26.8% 370
CCCHK '08 J2 - Lucky Number CCC 3 26.8% 845
CCC '18 S5 - Maximum Strategic Savings CCC 20p 26.8% 407
CCC '13 S2 - Bridge Transport CCC 5 26.7% 2058
CCC '15 S2 - Jerseys CCC 5p 26.7% 1959
CCC '12 S3 - Absolutely Acidic CCC 7 26.7% 1863
CCC '23 S2 - Symmetric Mountains CCC 7p 26.5% 815
Mock CCC '20 S2 - Flipper Redux Mock CCC 7p 26.5% 280
CCC '14 S3 - The Geneva Confection CCC 7p 26.4% 2812
CCC '16 S3 - Phonomenal Reviews CCC 12p 26.4% 1103
Mock CCC '18 Contest 5 J2 - Smallest Mode Mock CCC 3p 26.2% 227
CCC '22 S2 - Good Groups CCC 5p 26.1% 1562
CCC '21 S4 - Daily Commute CCC 12p 26.0% 585
CCC '19 S2 - Pretty Average Primes CCC 5p 25.9% 2359
CCC '11 J2 - Who Has Seen The Wind CCC 5 25.7% 1867
Mock CCC '18 Contest 3 S4 - A Graph Problem Mock CCC 10 25.7% 213
CCC '20 S4 - Swapping Seats CCC 12p 25.6% 491
CCC '10 S4 - Animal Farm CCC 15p 25.6% 529
Mock CCC '22 2 S1 - Kaguya Wants to Let Ishigami Pass Mock CCC 5p 25.5% 177
CCC '08 S4 - Twenty-four CCC 10 25.5% 744
CCC '96 S5 - Maximum Distance CCC 7 25.4% 417
CCC '02 J2 - AmeriCanadian CCC 3 25.0% 3885
Mock CCC '22 Contest 1 J5 - New Year's Restrictions Mock CCC 7p 24.9% 143
CCC '21 S3 - Lunch Concert CCC 10p 24.6% 1018
CCC '00 S4 - Golf CCC 7 24.5% 2308
CCC '21 S5 - Math Homework CCC 15p 24.4% 419
CCC '23 J5 - CCC Word Hunt CCC 10p 24.2% 532
Mock CCC '18 Contest 3 J2 - A Palindrome Problem Mock CCC 3p 24.2% 241
Mock CCC '15 J1 - 416 Mock CCC 3p 24.2% 762
CCC '18 J5 - Choose your own path CCC 7p 24.1% 1614
CCC '03 J2 - Picture Perfect CCC 3p 23.9% 1614
CCC '04 S5 - Super Plumber CCC 10p 23.8% 402
CCC '15 S5 - Greedy For Pies CCC 17p 23.5% 555
CCC '17 J4 - Favourite Times CCC 5p 23.4% 1572
OTHS Coding Competition 1 (Mock CCC) J4 - Railgun Uncategorized 7p 23.4% 169
Mock CCC '23 2 S1 - Composite Fibonacci Numbers Mock CCC 3p 23.2% 282
Mock CCC '18 Contest 1 J3/S1 - A Math Problem Mock CCC 5p 23.1% 345
Mock CCC '18 Contest 2 S5 - A Link/Cut Tree Problem Mock CCC 15p 23.1% 89
Mock CCC '23 1 S2 - Keenan Hates Triangles Mock CCC 5p 22.9% 97
CCC '09 S1 - Cool Numbers CCC 5 22.8% 2027
CCC '16 S5 - Circle of Life CCC 20p 22.5% 578
CCC '10 J4 - Global Warming CCC 5p 22.5% 1057
CCC '24 J4 - Troublesome Keys CCC 5p 22.0% 308