Bathroom Stalls solutions

Bathroom Stalls was solved using Scheme by 4 contestants. Solution sizes: average 2421 bytes (shortest: 1520; longest: 4086).

8153.

Atrus (S, L1)
9640.

gwaihir (S) (1520 B)
14252.

Pla (S, L1) (2034 B)
17083.

amz3 (S) (4086 B)