14 lines
188 B
Python
14 lines
188 B
Python
import math
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n = 10000000
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a = [True] * n
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for i in range(2, int(math.sqrt(n))):
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for j in range(i * 2, n, i):
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a[j] = False
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b = [i for i in range(2, n) if a[i]]
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#print(b)
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print(len(b))
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