Problems

Problem search

Point range
Go Random

Hot problems

Problem Category ▾ Points AC % Users
CCC '03 S3 - Floor Plan CCC 7 27.8% 1956
CCC '03 S5 - Trucking Troubles CCC 10p 17.6% 684
CCC '02 J1 - 0123456789 CCC 3 5.4% 724
CCC '02 J2 - AmeriCanadian CCC 3 25.1% 3890
CCC '02 S1 - The Students' Council Breakfast CCC 5 39.6% 1499
CCC '02 S2 - Fraction Action CCC 5 19.0% 1886
CCC '07 S2 - Boxes CCC 5 27.5% 1214
CCC '07 S3 - Friends CCC 7 37.5% 1703
CCC '07 S4 - Waterpark CCC 7 30.9% 1502
CCC '15 S1 - Zero That Out CCC 3 51.0% 3883
CCC '15 S2 - Jerseys CCC 5p 26.7% 1960
CCC '15 S3 - Gates CCC 10p 18.7% 1779
CCC '15 S4 - Convex Hull CCC 15p 27.4% 1162
CCC '15 S5 - Greedy For Pies CCC 17p 23.5% 555
CCC '15 J1 - Special Day CCC 3 36.9% 8398
CCC '15 J2 - Happy or Sad CCC 3 37.1% 7087
CCC '15 J3 - Rövarspråket CCC 5p 38.5% 2269
CCC '15 J4 - Wait Time CCC 5 39.4% 1314
CCC '15 J5 - π-day CCC 10p 27.4% 1467
CCC '01 J1 - Dressing Up CCC 3 48.2% 2878
CCC '01 J2 - Mod Inverse CCC 3 42.9% 2539
CCC '16 S1 - Ragaman CCC 3p 29.7% 2307
CCC '16 S2 - Tandem Bicycle CCC 5p 53.3% 3507
CCC '16 S4 - Combining Riceballs CCC 15p 28.8% 948
CCC '16 S3 - Phonomenal Reviews CCC 12p 26.4% 1103
CCC '16 S5 - Circle of Life CCC 20p 22.5% 578
CCC '16 J1 - Tournament Selection CCC 3 41.2% 4721
CCC '16 J2 - Magic Squares CCC 3 34.5% 3252
CCC '16 J3 - Hidden Palindrome CCC 5 45.9% 2562
CCC '16 J4 - Arrival Time CCC 5 29.1% 1682
CCOQR '16 - Stupendous Bowties CCC 10p 31.8% 248
CCOQR '16 - Through A Maze Darkly CCC 20p 18.4% 104
CCOQR '16 - Data Structure CCC 15p 22.1% 177
CCCHK '15 J1 - Rock-paper-scissors CCC 3 51.6% 855
CCCHK '15 J2 - What is the minimum area? CCC 5 35.7% 267
CCCHK '15 J3 - Queens can't attack me! CCC 5 51.1% 613
CCCHK '15 J4 - Where to build my house? CCC 5 18.0% 272
CCCHK '15 J5 - No friends in the same group. CCC 15p 9.8% 33
CCC '05 S3 - Quantum Operations CCC 10p 34.8% 440
CCC '05 S4 - Pyramid Message Scheme CCC 10 35.7% 819
CCC '01 S4 - Cookies CCC 10 19.1% 418
CCC '05 J4 - Cross Spiral CCC 7p 32.6% 581
CCC '01 S5 - Post's Correspondence Problem CCC 10 28.9% 315
CCC '96 S2 - Divisibility by 11 CCC 7 6.8% 181
CCC '96 S5 - Maximum Distance CCC 7 25.5% 418
CCC '96 S3 - Pattern Generator CCC 5 11.0% 357
CCC '98 S2 - Cross Number Puzzle CCC 5 43.1% 495
CCC '01 S3 - Strategic Bombing CCC 7 38.7% 1458
CCC '01 S1 - Keeping Score CCC 5 32.7% 1504
CCC '01 S2 - Spirals CCC 5 41.2% 913