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How do you deal with repeating elements?
For example:
a = 1, 4, 5
b = 2, 3, 3
c = 1, 2, 3
According to the test cases when you traverse array b, you must only count the "3" once.
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Triple sum
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How do you deal with repeating elements? For example: a = 1, 4, 5 b = 2, 3, 3 c = 1, 2, 3 According to the test cases when you traverse array b, you must only count the "3" once.