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  1. a=int(input())
  2. b=int(input())
  3. c=int(input())
  4. d=a*4
  5. e=b*2
  6. f=c
  7. h=min(d, e, f)
  8. print(h)
Success #stdin #stdout 0.02s 9300KB
stdin
10
30
50
stdout
40