摘要: ```cpp include include using namespace std; struct seg_tree { int l, r; long long v, lazy; } tree[400001]; void build(int k, int l, int r) { tree[k].l 阅读全文
posted @ 2017-10-13 22:40 Js2xxx 阅读(389) 评论(0) 推荐(0) 编辑