摘要：
题目链接：https://www.luogu.org/problemnew/show/P3178 模板题 菜 include include include include define lson left, mid, rt 1; build(lson); build(rson); PushUP(r 阅读全文
摘要：
题目链接：https://www.luogu.org/problemnew/show/P3384 诶又给自己留了个坑..不想写线段树一大理由之前的模板变量名太长 include include include include define lson left, mid, rt 1; build(ls 阅读全文