“White shores, and beyond. A far green country under a swift sunrise.”--灰魔法师
“White shores, and beyond. A far green country under a swift sunrise.”--灰魔法师 给出长度为n的序列a, 求有多少对数对 (i, j) (1 <= i < j <= n) 满足 ai + aj 为完全平方数。
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标签: HBC20809灰魔法师题解
“White shores, and beyond. A far green country under a swift sunrise.”--灰魔法师
“White shores, and beyond. A far green country under a swift sunrise.”--灰魔法师 给出长度为n的序列a, 求有多少对数对 (i, j) (1 <= i < j <= n) 满足 ai + aj 为完全平方数。
标签: HBC20809灰魔法师题解