#include <bits/stdc++.h>
using namespace std;

void fast_io() {
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);
}

int main() {
	fast_io();
	int n;
	long long k;
	cin >> n >> k;
	vector<int> h(n);
	for (int i = 0; i < n; i++) {
		cin >> h[i];
	}
	vector<long long> x(n), y(n);
	for (int i = 0; i < n; i++) {
		cin >> x[i] >> y[i];
	}
	auto dist = [&](int i, int j) {
		return (x[i] - x[j]) * (x[i] - x[j]) + (y[i] - y[j]) * (y[i] - y[j]);
	};
	k = k * k;
	int ans = 0;
	for (int i = 0; i < n; i++) {
		bool ok = false;
		for (int j = 0; j < n; j++) {
			if (dist(i, j) <= k && h[i] < h[j]) {
				ok = true;
				break;
			}
		}
		ans += !ok;
	}
	cout << ans << endl;
}