fork(2) download 
  1. s=input().lower();print[c for c in s if s.count(c)<2][1:2]
Success #stdin #stdout 0.01s 9016KB
comments ()
stdin 
"AAaAAABBbBB"
stdout 
[]
https://ideone.com/5CoR7S
2nd non-repeated char
language:
Python (cpython 2.7.16)
created:
8 years ago
visibility:
secret

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