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  1. a,b,c=input().split(':')
  2. a=int(a)
  3. if c[a-1:]:print(c[:a]+b+c[a:])
Success #stdin #stdout 0.02s 9984KB
comments (?)
stdin
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3:A2C:Hello World!
stdout
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HelA2Clo World!
https://ideone.com/T3N7qZ
language:
Python 3 (python  3.9.5)
created:
8 years ago
visibility:
public

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