int main()
{
    long  a[100005][4];
    long n,i,j,z,b;
    scanf("%ld",&n);
    for(i=1;i<=n;i++)
        scanf("%ld %ld %ld %ld",&a[i][0],&a[i][1],&a[i][2],&a[i][3]);
    
    scanf("%ld %ld",&z,&b);
    for(i=n;i>=1;i--)
    {
        if(a[i][0]<=z&&a[i][2]>=z)
        {
            if(a[i][1]<=b&&a[i][3]>=b)
            {
                printf("%ld",i);
                return 0;
            }
        }
    }
    printf("-1");
    return 0;
}