2025-08-16 11:27:06 +0000 UTC

Two Out of Three
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Code

class Solution:
    def twoOutOfThree(self, nums1: List[int], nums2: List[int], nums3: List[int]) -> List[int]:
        freqs = [(False, False, False)] * 102
        for num in nums1:
            freqs[num] = (True, False, False)
        for num in nums2:
            stat1, stat2, _ = freqs[num]
            if not stat2:
                freqs[num] = (stat1, True, False)
        for num in nums3:
            stat1, stat2, stat3 = freqs[num]
            if not stat3:
                freqs[num] = (stat1, stat2, True) 
        nums1.clear()
        for num in range(1, len(freqs)):
            if sum(freqs[num]) >= 2:
                nums1.append(num)
        return nums1