Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
CCC '00 J2 - 9966 CCC 3p 35.4% 2221
CCC '01 J1 - Dressing Up CCC 3p 47.4% 3172
CCC '01 J2 - Mod Inverse CCC 3p 43.2% 2847
CCC '02 J1 - 0123456789 CCC 3p 5.8% 870
CCC '02 J2 - AmeriCanadian CCC 3p 25.7% 4491
CCC '03 J1 - Trident CCC 3p 29.0% 2660
CCC '03 J2 - Picture Perfect CCC 3p 24.2% 1786
CCC '04 J1 - Squares CCC 3p 32.8% 6594
CCC '04 J2 - Terms of Office CCC 3p 37.5% 3817
CCC '04 J3 - Smile with Similes CCC 3p 57.5% 4451
CCC '05 J1 - The Cell Sell CCC 3p 8.8% 1754
CCC '05 J2 - RSA Numbers CCC 3p 40.6% 3273
CCC '06 J1 - Canadian Calorie Counting CCC 3p 27.1% 8364
CCC '06 J2 - Roll the Dice CCC 3p 27.4% 3385
CCC '06 J3 - Cell-Phone Messaging CCC 3p 41.6% 1738
CCC '07 J1 - Who is in the Middle? CCC 3p 47.2% 10465
CCC '07 J2 - I Speak TXTMSG CCC 3p 22.2% 2614
CCC '07 J3 - Deal or No Deal Calculator CCC 3p 32.3% 3788
CCC '07 S1 - Federal Voting Age CCC 3p 36.3% 2492
CCC '08 J1 - Body Mass Index CCC 3p 26.9% 4721
CCC '08 J2 - Do the Shuffle CCC 3p 42.3% 4008
CCC '08 J3 - GPS Text Entry CCC 3p 57.9% 1551
CCC '09 J1 - ISBN CCC 3p 47.4% 4087
CCC '10 J1 - What is n, Daddy? CCC 3p 29.5% 4247
CCC '11 J1 - Which Alien? CCC 3p 36.0% 6960
CCC '11 S2 - Multiple Choice CCC 3p 54.5% 7107
CCC '12 J1 - Speed fines are not fine! CCC 3p 28.4% 5882
CCC '12 J2 - Sounds fishy! CCC 3p 34.6% 5129
CCC '12 J3 - Icon Scaling CCC 3p 50.4% 3210
CCC '12 J4 - Big Bang Secrets CCC 3p 59.0% 2711
CCC '12 S1 - Don't pass me the ball! CCC 3p 55.6% 2475
CCC '13 J1 - Next in line CCC 3p 62.8% 13778
CCC '13 J2 - Rotating letters CCC 3p 45.3% 5421
CCC '14 J1 - Triangle Times CCC 3p 29.7% 7591
CCC '14 J2 - Vote Count CCC 3p 44.9% 5993
CCC '14 J3 - Double Dice CCC 3p 56.0% 5091
CCC '15 J1 - Special Day CCC 3p 36.8% 9773
CCC '15 J2 - Happy or Sad CCC 3p 37.6% 8221
CCC '15 S1 - Zero That Out CCC 3p 51.4% 4214
CCC '16 J1 - Tournament Selection CCC 3p 41.2% 5247
CCC '16 J2 - Magic Squares CCC 3p 35.0% 3680
CCC '16 S1 - Ragaman CCC 3p 30.0% 2565
CCC '17 J1 - Quadrant Selection CCC 3p 60.9% 6229
CCC '17 J2 - Shifty Sum CCC 3p 54.1% 5189
CCC '17 J3 - Exactly Electrical CCC 3p 30.2% 2710
CCC '17 S1 - Sum Game CCC 3p 47.6% 3527
CCC '18 J1 - Telemarketer or not? CCC 3p 39.8% 8094
CCC '18 J2 - Occupy parking CCC 3p 52.7% 6755
CCC '18 J3 - Are we there yet? CCC 3p 56.2% 3688
CCC '18 S1 - Voronoi Villages CCC 3p 34.3% 4051