17 lines
334 B
Python
17 lines
334 B
Python
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def count1(n):
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x = str(n)
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count = 0
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for index, digit in enumerate(x[::-1]):
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digit = int(digit)
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if digit != 0:
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if digit == 1:
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numberAfter = x[len(x) - index:] or '0'
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count += int(numberAfter) + 1
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else:
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count += 10 ** index
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count += int(10 ** (index - 1) * index * digit)
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return count
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print(count1(3**35))
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