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Problem ▾ Category Points AC % Users
GCC '16 P2 - Classified Documents Uncategorized 15p 10.9% 4
GCC '16 P1 - Watching Anime Uncategorized 10p 15.9% 65
Foxlings Uncategorized 10p 14.5% 76
Flip the Switches Uncategorized 5 34.0% 347
Fizz Coke Uncategorized 7p 27.8% 50
Fixing Shirts Uncategorized 15 18.4% 24
Firebending Uncategorized 3 61.3% 352
Find Dates Uncategorized 7 8.5% 57
Figurines Uncategorized 20 21.1% 29
Fibonacci Sequence (Harder) Uncategorized 17 19.6% 304
Fibonacci Sequence Uncategorized 15p 13.0% 785
Favorite Numbers Uncategorized 5 26.0% 119
Fast Search Uncategorized 15p 26.6% 104
Fast Matrix Multiplication Classics 20p 0.0% 0
Fast LCA (Hard) Uncategorized 17 8.7% 7
Fast LCA Uncategorized 12 22.8% 48
Fast Factorial Calculator 3 Uncategorized 40 2.5% 8
Fast Factorial Calculator 2 Uncategorized 20p 10.4% 68
Fast Factorial Calculator Uncategorized 7 15.9% 540
Fast Bit Duplication Uncategorized 10 32.3% 48
Fast Bit Counting Uncategorized 3p 48.0% 278
Falling Snowflakes Uncategorized 15p 40.7% 37
Fair Competition Olympiads School 5 32.7% 121
Factors Uncategorized 7 8.9% 46
Factorial Sum List Uncategorized 5 41.2% 117
Factorial Calculator TLE 7p 18.3% 79
Facebook Hacker Cup '19 Final Round P6 - Temporal Revision FHC 40p 63.6% 5
Facebook Hacker Cup '19 Final Round P1 - Strings as a Service FHC 15p 33.3% 4
Facebook Hacker Cup '17 Qualifying Round P3 - Fighting the Zombie FHC 10p 19.4% 29
Facebook Hacker Cup '17 Qualifying Round P2 - Lazy Loading FHC 5p 41.5% 38
Facebook Hacker Cup '17 Qualifying Round P1 - Progress Pie FHC 5p 34.6% 20
Facebook Hacker Cup '15 Round 3 P4 - Fox Rocks FHC 35p 42.1% 13
Facebook Hacker Cup '15 Round 3 P3 - Gentrification FHC 25p 42.9% 17
Facebook Hacker Cup '15 Round 3 P2 - Lunch Scheduling FHC 15p 14.6% 7
Facebook Hacker Cup '15 Round 3 P1 - Boomerang FHC 12p 25.7% 24
Facebook Hacker Cup '15 Round 2 P4 - Fox Socks FHC 30 10.3% 21
Facebook Hacker Cup '15 Round 2 P3 - Autocomplete Strikes Back FHC 20 49.0% 22
Facebook Hacker Cup '15 Round 2 P2 - All Critical FHC 15 55.6% 42
Facebook Hacker Cup '15 Round 2 P1 - Lazy Sort FHC 10 31.5% 263
Facebook Hacker Cup '15 Round 1 P4 - Corporate Gifting FHC 17 46.0% 88
Facebook Hacker Cup '15 Round 1 P3 - Winning at Sports FHC 12 50.3% 195
Facebook Hacker Cup '15 Round 1 P2 - Autocomplete FHC 10 37.4% 283
Facebook Hacker Cup '15 Round 1 P1 - Homework FHC 10 34.0% 643
Facebook Hacker Cup '14 Final Round P4 - Tours Uncategorized 25 21.1% 21
Facebook Hacker Cup '14 Final Round P3 - Fortunate Wheels Uncategorized 40 14.7% 9
Expensive Chair Stacking Uncategorized 7p 36.3% 114
Expected Value Uncategorized 15 24.5% 20
Expected Inversions Uncategorized 12p 33.1% 24
Executable Format Uncategorized 10 28.3% 22
Exam Prep Uncategorized 7p 24.6% 223