P1003萌新50分求救

#include<bits/stdc++.h>
using namespace std;
int ans,x,y,n,x1,y4,x2=1,y2=1;	
int a[10001],b[10001],c[10001],d[10001];
int main()
{
	cin>>n;
	for(int i=1;i<=n;i++)
	{
		cin>>a[i]>>b[i]>>c[i]>>d[i];
		c[i]=a[i]+c[i];
		d[i]=c[i]+d[i];
		x1++;
		/*for(int j=1;j<=x1;j++)
		{
			for(int k=1;k<=y4;k++)
			{
				a[x2][y2]=i;
				y2++;
			}
		}*/
	}
	cin>>x>>y;
	for(int i=x1;i>=1;i--)
	{
		if(x>=a[i]&&y>=b[i]&&x<=c[i]&&y<=d[i])
		{
			cout<<i;
			return 0;
		}
	}
	cout<<-1;
	return 0;
}