摘要: 单点修改,区间查询 #include<bits/stdc++.h> #define ri register int #define ll long long #define fast ios::sync_with_stdio(0), cin.tie(0), cout.tie(0) using nam 阅读全文
posted @ 2020-03-20 20:52 kojoker 阅读(133) 评论(0) 推荐(0)