9 lines
210 B
Python
9 lines
210 B
Python
import sys
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input = sys.stdin.readline
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if __name__ == "__main__":
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N, M = map(int, input().split())
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S = {input().rstrip() for _ in range(N)}
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print(sum(1 for _ in range(M) if input().rstrip() in S))
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