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Well, I tried with merge sort. And merge sort takes like quicksort O(n log n) time. This is pretty fast. But anyway the timeout was not the problem. The problem is that it produces wrong answers. Has anyone an idea how this problem differs from the classic inversion count problem?
Lily's Homework
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Well, I tried with merge sort. And merge sort takes like quicksort O(n log n) time. This is pretty fast. But anyway the timeout was not the problem. The problem is that it produces wrong answers. Has anyone an idea how this problem differs from the classic inversion count problem?