#include <iostream>
#include <string>
#include<math.h>
using namespace std;

class Coordinates
{
public:
    Coordinates() {}
     double x;
     double y;
    Coordinates(double x, double y)
    {
        this->x = x;
        this->y = y;
    }
};
class  Hamster :public Coordinates
{
public:
    Hamster(double x, double y):Coordinates(x, y) {}
};
class  Dog :public Coordinates
{
public:
    Dog(double x, double y) :Coordinates(x, y) {}
};
class  Den:public Coordinates
{
public:
    Den() {};
    Den(double x, double y) :Coordinates(x, y) {}
};
int main()
{
    double x1, y1, x2, y2, n,x,y;
    int g = 0;
    cin >> x1 >> y1 >> x2 >> y2 >> n;
    Hamster FastHamster(x1, y1);
    Dog AgryDog(x2,y2);
    for (int i = 0; i < n; i++)
    {
        cin >> x >> y;
        if (sqrtl(pow((FastHamster.x - x), 2) + pow((FastHamster.y - y), 2))<=(sqrtl(pow((AgryDog.x - x), 2) + pow((AgryDog.y - y), 2)) / 2)&&g==0 ) {
            cout << i+1;
            g++;
            break;
        }
    }
    if(g==0)cout << "NO";
    return 0;

}