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Problem Category Points AC % Users
Fast Factorial Calculator 2 Uncategorized 20p 10.1% 71
Fast Factorial Calculator 3 Uncategorized 40 2.2% 9
Factorial Calculator TLE 7p 19.9% 89
Factors Uncategorized 7 8.8% 58
Fair Competition Olympiads School 5 33.9% 131
Falling Snowflakes Uncategorized 15p 36.8% 47
Fast Bit Counting Uncategorized 3p 47.2% 288
Fast LCA Uncategorized 12 22.7% 59
Fast LCA (Hard) Uncategorized 17 8.4% 9
The Codefather Uncategorized 15p 7.1% 23
Favorite Numbers Uncategorized 5 25.6% 130
Facebook Hacker Cup '14 Final Round P3 - Fortunate Wheels Uncategorized 40 14.7% 9
Facebook Hacker Cup '14 Final Round P4 - Tours Uncategorized 25 22.6% 24
Facebook Hacker Cup '15 Round 1 P1 - Homework FHC 10 33.9% 696
Facebook Hacker Cup '15 Round 1 P2 - Autocomplete FHC 10 38.2% 313
Facebook Hacker Cup '15 Round 1 P3 - Winning at Sports FHC 12 49.2% 203
Facebook Hacker Cup '15 Round 1 P4 - Corporate Gifting FHC 17 46.2% 89
Facebook Hacker Cup '15 Round 2 P1 - Lazy Sort FHC 10 32.1% 304
Facebook Hacker Cup '15 Round 2 P2 - All Critical FHC 15 56.4% 46
Facebook Hacker Cup '15 Round 2 P3 - Autocomplete Strikes Back FHC 20 50.0% 25
Facebook Hacker Cup '15 Round 2 P4 - Fox Socks FHC 30 10.6% 22
Facebook Hacker Cup '15 Round 3 P1 - Boomerang FHC 12p 24.6% 28
Facebook Hacker Cup '15 Round 3 P2 - Lunch Scheduling FHC 15p 14.5% 7
Facebook Hacker Cup '15 Round 3 P3 - Gentrification FHC 25p 43.3% 18
Facebook Hacker Cup '15 Round 3 P4 - Fox Rocks FHC 35p 34.4% 13
Facebook Hacker Cup '17 Qualifying Round P1 - Progress Pie FHC 5p 34.1% 21
Facebook Hacker Cup '17 Qualifying Round P2 - Lazy Loading FHC 5p 44.1% 44
Facebook Hacker Cup '17 Qualifying Round P3 - Fighting the Zombie FHC 10p 19.0% 33
Facebook Hacker Cup '19 Final Round P1 - Strings as a Service FHC 15p 31.3% 5
Facebook Hacker Cup '19 Final Round P6 - Temporal Revision FHC 40p 41.2% 5
Fibonacci Sequence Uncategorized 15p 13.5% 928
Fibonacci Sequence (Harder) Uncategorized 17 19.4% 456
Figurines Uncategorized 20 21.0% 31
Firebending Uncategorized 3 61.8% 384
Fives Uncategorized 10p 19.4% 9
Fixing Shirts Uncategorized 15 19.7% 29
Fizz Coke Uncategorized 7p 26.1% 58
A Floyd-Warshall Problem Uncategorized 15 0.6% 2
Fours Uncategorized 30p 7.1% 5
Anti-Fire Fox Uncategorized 25p 5.6% 2
Foxlings Uncategorized 10p 14.1% 87
The Fox and the Wolf Uncategorized 15p 6.6% 7
Imperative French Uncategorized 15 6.3% 22
Flip the Switches Uncategorized 5 34.2% 369
Angie and Functions (Hard) Uncategorized 30 5.1% 2
PEG Test '11 - Cyclopian Air Uncategorized 3 29.4% 273
PEG Test '11 - Cyclopian Suits Uncategorized 3 25.1% 189
PEG Test '11 - Cyclopian Cash Uncategorized 3 28.1% 298
PEG Test '11 - Cyclopian Census Uncategorized 5 49.1% 216
PEG Test '11 - Cyclopian Puzzle Uncategorized 10 54.5% 380