using stl set

Revision en1, by b4world, 2015-08-05 23:08:30

Why did this code time out during contest. I cannot figure it out. If someone can please help on this ? http://codeforces.me/contest/567/submission/12374052

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en1 English b4world 2015-08-05 23:08:30 171 Initial revision (published)