link: http://codeforces.com/gym/100016 I used a O(n^2*k) construct with some optimization and run 4100+ms how can it be solved in O(n^2),can anyone give some ideas?
link: http://codeforces.com/gym/100016 I used a O(n^2*k) construct with some optimization and run 4100+ms how can it be solved in O(n^2),can anyone give some ideas?
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I don't think it has O(n^2) solution, but probably there is O(n^2 * log(k)) or O(n * k * log(n)).