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摘要: 线段树 区间和,单点修改 #include <bits/stdc++.h> typedef long long LL; const int maxn = 500000; using namespace std; struct tTree { LL sum; int l, r; }; tTree tr 阅读全文
posted @ 2019-05-19 21:37 acboyty 阅读(343) 评论(0) 推荐(0) 编辑