头

#include <iostream>#include <cstdio>#include <cstring>#include <map>#include <cassert>#include <string>#include <queue>#include <cmath>#include <cmath>#include <algorithm>using namespace std;#define lson l,m,rt<<1#define rson m+1,r,rt<<1|1#define rep(i,a,b) for(int i=(a);i<(int)(b);++i)#define rrep(i,b,a) for(int i=(b);i>=(int)(a);--i)#define clr(a,x) memset(a,x,sizeof(a))#define mp make_pair#define eps 1e-10#define LL long long#define zero(x) (-eps < (x) && (x) < eps)const int maxn = 5000 + 5;int lx[maxn],rx[maxn],ly[maxn],ry[maxn];int X[maxn],Y[maxn];vector<int> v[maxn];