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21 lines
502 B
Python
21 lines
502 B
Python
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from collections import Counter
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def sock_merchant(colors: list[int]) -> int:
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"""
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>>> sock_merchant([10, 20, 20, 10, 10, 30, 50, 10, 20])
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3
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>>> sock_merchant([1, 1, 3, 3])
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2
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"""
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return sum(socks_by_color // 2 for socks_by_color in Counter(colors).values())
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if __name__ == "__main__":
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import doctest
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doctest.testmod()
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colors = [int(x) for x in input("Enter socks by color :").rstrip().split()]
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print(f"sock_merchant({colors}) = {sock_merchant(colors)}")
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