20 lines
372 B
Python
20 lines
372 B
Python
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def main():
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N = int(input())
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K = int(input())
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ilist = [int(input()) for _ in range(K)]
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nb = 0
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lights = [True for _ in range(N+1)]
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for j in range(K):
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l = 1
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i = ilist[j]
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while i*l <= N:
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lights[i*l] = not lights[i*l]
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l+=1
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nb = max(nb, len([0 for a in lights if not a]))
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print(nb)
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main()
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