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I just encountered a problem on a forum seemingly uses DSU, but there is a query that makes me question my DSU.↵
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There are a number n and n numbers that follow. There are 3 queries:↵
+ Put a and b together↵
+ Seperate a and b↵
+ Determine whether a and b is connected↵
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I am thinking of a reverse-DSU technique.↵
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Please help!↵
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P/S: Thank you!
