#define _USE_MATH_DEFINES
#include  <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
#include <string>
#include<math.h>
#include<iomanip>
#include<stdio.h>
#include <stdlib.h>
#include<stdio.h>
#include <queue>
#include<map>
#include <fstream>
#include <sstream>
#include<set>
#include<stack>
#include<time.h>
#include <sys/types.h>
#include <tuple>
#include <numeric>
#include <iterator>

typedef long long int ll;
//#include<bits/stdc++.h>


using namespace std;

ll gcd(ll a, ll b) {
    if (a < b)swap(a, b);
    if (b == 0)return a;
    return gcd(b, a % b);
}
int lcm(int a, int b) {
    return a * b / gcd(a, b);
}




int main()
{

    int Q;
    Q = 1;
    //cin >> Q;



    while (Q--) {
        int n;
        cin >> n;
        int m;
        cin >> m;
        
        vector<pair<int, pair<int, int>>>p(n);
        vector<int>h(n); vector<int>x(n), y(n);
        for (int i = 0; i < n; i++)cin >> h[i];
        for (int i = 0; i < n; i++) {
            cin >> x[i] >> y[i];
        }
        
        int ans = 0;
        for (int i = 0; i < n; i++) {
            for (int j = 0; j < n; j++) {
                if (i == j)continue;
                if (h[i] >= h[j])continue;
                if (sqrt(pow(x[i] - x[j], 2) + pow(y[i] - y[j], 2)) > m)continue;
                ans++; break;
            }
        }
        cout << n-ans;

    }
        return 0;
}