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Problem Category Points AC % Users
Fast Bit Duplication Uncategorized 10 40.0% 8
BOI 2007 P1 - Escape BOI 20p 18.1% 21
BOI 2007 P2 - Sorting BOI 30p 9.8% 6
BOI 2007 P3 - Sound BOI 10p 45.6% 62
BOI 2011 P5 - Time Is Money BOI 20p 4.5% 5
Boolean Uncategorized 4 37.9% 1195
Polynomial Time Boolean Satisfiability Uncategorized 15p 31.7% 22
Back to School '16: Harambe Seasonal 3p 27.0% 512
Back to School '16: Paradox Seasonal 5 35.5% 151
Back to School '16: Dodgeball Seasonal 7p 34.2% 209
Back to School '16: Screensaver Seasonal 10 10.7% 67
Back to School '16: Cherry Tree Seasonal 12p 39.5% 131
Back to School '16: Times Table Seasonal 15p 5.8% 24
Back to School '16: Contest Practice Seasonal 20p 39.7% 36
Back to School '16: Textbooks Seasonal 20p 24.8% 60
Back To School '17: 🅱aram🅱e Seasonal 3p 43.8% 271
Back to School '17: Avalon Seasonal 5p 29.3% 195
Back To School '17: Physics Seasonal 5p 7.1% 50
Back To School '17: Wet Mud Seasonal 10p 10.9% 95
Back to School '17: New English Seasonal 12p 10.7% 28
Back to School '17: Sour Candy Seasonal 15p 30.5% 58
Back to School '17: Hot and Cold Seasonal 20p 19.6% 19
Back to School '17: Big Integer Seasonal 35p 3.1% 20
Back To School '18: Harambe Seasonal 3 22.5% 201
Back To School '18: Letter Frequency Seasonal 5p 23.1% 151
Back To School '18: Making Friends Seasonal 7p 17.4% 91
Back To School '18: Beautiful Trees Seasonal 10p 14.2% 53
Back To School '18: An FFT Problem Seasonal 12p 29.8% 67
Back To School '18: The Golden Porcupine Seasonal 15p 19.8% 39
Back To School '18: Trucking Troubles II Seasonal 20p 36.6% 15
Back To School '18: Function Maximization Seasonal 25p 11.7% 17
CCC '00 J1 - Calendar CCC 3 9.6% 290
CCC '00 J2 - 9966 CCC 3 36.8% 469
CCC '00 J3 - Slot Machines CCC 5 26.2% 594
CCC '00 J4 - Babbling Brooks CCC 7 33.7% 384
CCC '00 J5 - Surfing CCC 7 15.6% 129
CCC '00 S4 - Golf CCC 10 25.5% 502
CCC '00 S5 - Sheep and Coyotes CCC 10 13.1% 159
CCC '01 J1 - Dressing Up CCC 3 50.7% 620
CCC '01 J2 - Mod Inverse CCC 3 40.4% 513
CCC '01 S1 - Keeping Score CCC 5 29.2% 375
CCC '01 S2 - Spirals CCC 5 33.6% 168
CCC '01 S2 - Spirals (Exact Version) CCC 7 7.6% 23
CCC '01 S3 - Strategic Bombing CCC 10 32.2% 271
CCC '01 S4 - Cookies CCC 7 19.1% 111
CCC '01 S5 - Post's Correspondence Problem CCC 10 22.4% 101
CCC '02 J1 - 0123456789 CCC 5 9.5% 201
CCC '02 J2 - AmeriCanadian CCC 3 22.1% 881
CCC '02 S1 - The Students' Council Breakfast CCC 5 39.7% 388
CCC '02 S2 - Fraction Action CCC 5 28.5% 866