Problems

Problem search

Point range
Go Random

Hot problems

Problem Category Points AC % Users
CCC '05 S5 - Pinball Ranking CCC 12p 19.4% 767
CCC '06 J1 - Canadian Calorie Counting CCC 3 27.1% 7709
CCC '06 J2 - Roll the Dice CCC 3 27.2% 3188
CCC '06 J3 - Cell-Phone Messaging CCC 3 41.5% 1540
CCC '06 J4 - It's tough being a teen! CCC 7 41.7% 1285
CCC '06 J5 - CCC Othello CCC 10p 36.7% 242
CCC '06 S1 - Maternity CCC 5 37.5% 1173
CCC '06 S2 - Attack of the CipherTexts CCC 5 5.6% 277
CCC '06 S3 - Tin Can Telephone CCC 12 20.6% 543
CCC '06 S4 - Groups CCC 10 45.1% 347
CCC '06 S5 - Origin of Life CCC 15 19.8% 127
CCC '07 J1 - Who is in the Middle? CCC 3 47.0% 9731
CCC '07 J2 - I Speak TXTMSG CCC 3 21.7% 2403
CCC '07 J3 - Deal or No Deal Calculator CCC 3 32.4% 3496
CCC '07 J4 - Anagram Checker CCC 5 37.3% 2226
CCC '07 J5 - Keep on Truckin' CCC 7 19.8% 1116
CCC '07 S1 - Federal Voting Age CCC 3 36.1% 2399
CCC '07 S2 - Boxes CCC 5 27.4% 1277
CCC '07 S3 - Friends CCC 7 37.4% 1761
CCC '07 S4 - Waterpark CCC 7 31.2% 1563
CCC '07 S5 - Bowling for Numbers CCC 10p 30.2% 899
CCC '08 J1 - Body Mass Index CCC 3 34.8% 5822
CCC '08 J2 - Do the Shuffle CCC 3 43.1% 3679
CCC '08 J3 - GPS Text Entry CCC 3 55.3% 1420
CCC '08 J4 - From Prefix to Postfix CCC 7 42.9% 926
CCC '08 S1 - It's Cold Here! CCC 5 37.6% 2254
CCC '08 S2 - Pennies in the Ring CCC 5 30.8% 1225
CCC '08 S3 - Maze CCC 7 29.3% 1623
CCC '08 S4 - Twenty-four CCC 10 25.4% 866
CCC '08 S5 - Nukit CCC 10p 37.4% 731
CCC '09 J1 - ISBN CCC 3 47.3% 3882
CCC '09 J2 - Old Fishin' Hole CCC 5 38.5% 1717
CCC '09 J3 - Good Times CCC 5 20.4% 1460
CCC '09 J4 - Signage CCC 7 29.1% 717
CCC '09 S1 - Cool Numbers CCC 5 22.9% 2078
CCC '09 S2 - Lights Going On and Off CCC 10 41.0% 927
CCC '09 S3 - Degrees Of Separation CCC 10 28.0% 1398
CCC '09 S4 - Shop and Ship CCC 10 20.9% 1051
CCC '09 S5 - Wireless CCC 12p 35.2% 651
CCC '10 J1 - What is n, Daddy? CCC 3p 29.4% 4021
CCC '10 J2 - Up and Down CCC 5 22.0% 2163
CCC '10 J3 - Punchy CCC 5 33.0% 1477
CCC '10 J4 - Global Warming CCC 5p 22.7% 1098
CCC '10 J5 - Knight Hop CCC 7 36.7% 2499
CCC '10 S1 - Computer Purchase CCC 5 14.3% 1383
CCC '10 S2 - Huffman Encoding CCC 5 53.3% 1673
CCC '10 S3 - Firehose CCC 15p 18.9% 706
CCC '10 S4 - Animal Farm CCC 15p 25.7% 542
CCC '10 S5 - Nutrient Tree CCC 20p 19.8% 276
CCC '11 J1 - Which Alien? CCC 3 35.7% 6619