Codeforces Round #596 (Div. 2)D. Power Products

Codeforces Round #596 (Div. 2)D. Power Products http://codeforces.com/contest/1247/problem/Dhtml 题意:给出一串序列和k,找到知足 1 ≤ i < j ≤ n 1\leq i<j\leq n 1≤i<j≤n的对 ( i , j ) (i,j) (i,j),知足:存在一个 x x x,使得, a i a
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