14 lines
216 B
Python
14 lines
216 B
Python
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#!/usr/bin/env python3
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lim = 10**7
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divcount = [1]*lim
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count = 0
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for n in range(2, lim):
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for i in range(n, lim, n):
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divcount[i] += 1
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if divcount[n] == divcount[n-1]:
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count += 1
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print(count)
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