File Fix-it solutions

File Fix-it was solved using F# by 4 contestants. Solution sizes: average 4600 bytes (shortest: 2281; longest: 7502).

447. download u1ik (S, L) (7502 B)
1389. download cfern (S, L)
1450. download NumberCruncher (S) (3434 B)
2920. download Lazin (S, L) (2281 B)