#include<bits/stdc++.h>
using namespace std;
int main()
{
	int a[10000],b[10000],x[10000],y[10000],num,floor[10000][10000],m,n;
	cin>>num;
	for (int i=1;i<=num;i++)
	{
		cin>>a[i]>>b[i]>>x[i]>>y[i];
	}
	cin>>m>>n;
	for (int i=1;i<=n;i++)
	{
		for(int j=a[i];j<=a[i]+x[i];j++){
			for (int k=b[i];k<=b[i]+y[i];k++)
			{
				floor[j][k]=i;
			}
		}
	}
	if (floor[m][n]==0) cout<<-1;
	else cout<<floor[m][n];
   return 0;
}

结果50分，实在不知道哪里出问题了······