Loading

摘要: 线段树 区间修改 struct Tree { int l, r; ll val; }; Tree node[maxn << 2]; ll lazy[maxn << 2]; ll a[maxn]; void push_up(int i) { node[i].val = node[i << 1].val 阅读全文
posted @ 2020-10-05 16:02 MQFLLY 阅读(116) 评论(0) 推荐(0) 编辑