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题目链接:https://atcoder.jp/contests/abc406/tasks/abc406_d 题意: 爆二维矩阵的操作题,用map<int,set>r,c;存 int h,w,n; int a[maxn]; int b[maxn]; map<int,set<int>>r,c; voi 阅读全文
posted @ 2025-05-17 21:49
Marinaco
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摘要:
题目链接:https://codeforces.com/contest/2026/problem/D 题意: 记a数组的前缀和[l,r]为s(l,r) b数组为:[s(1,1),s(1,2)....,s(1,n)] , [s(2,2),s(2,3),s(2,4)...,s(2,n)] ,....., 阅读全文
posted @ 2025-05-17 16:37
Marinaco
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