Discussion @ 1523. K-inversions @ Timus Online Judge

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Discussion of Problem 1523. K-inversions

WA #7 Hint

Posted by Takanashi Rikka 25 Feb 2016 17:52

If you use fenwick tree and got WA #7, don't write Get(r) - Get(l - 1). Write (Get(r) - Get(l - 1) + mod) % mod.