我们仍未知道那天所看见的花的名字。

记忆化搜索#include<bits/stdc++.h>#define debug(x) cout<<#x<<" is "<<x<<endl#define fi first#define se second#define pb push_back#define mp make_pair#define DBG 0//const int N = 1e5 + 5;typedef long long ll;const int INF =

经典问题：嵌套矩形问题#include<bits/stdc++.h>#define debug(x) cout<<#x<<" is "<<x<<endl#define fi first#define se second#define pb push_back#define mp make_pair#define DBG 0const int N = 1000 + 5;typedef long long ll;const int