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Egor_1425

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Egor_1425
Mar 22nd, 2024
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  1. n = list(input())
  2. i = len(n) - 1
  3. ans = 0
  4. while i != -1:
  5.     ans += int(n[i]) * 2 ** (len(n) - 1 - i)
  6.     i -= 1
  7.  
  8. print(ans)
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