Graph connectivity problem: efficient solution?

Правка en1, от Al.Cash, 2015-06-28 23:53:10

I solved the following problem http://acm.timus.ru/problem.aspx?space=1&num=2055 using approach described here http://codeforces.me/blog/entry/15296 + binary search, but my solution barely fits in Time Limit.

There are solutions 10 times faster than mine and I'm very interested what approach could they be using?

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en1 Английский Al.Cash 2015-06-28 23:53:10 364 Initial revision (published)