import java.util.*;

public class Main{
public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		}
} import java.util.*; util.* java public class Main{
public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		}
} Main public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		} main {	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int d = sc.nextInt(); d sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        } {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        } int a = sc.nextInt(); a sc.nextInt() sc.nextInt sc int b = sc.nextInt(); b sc.nextInt() sc.nextInt sc double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2)); c Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2)) Math.sqrt Math Math.pow(a, 2) + Math.pow(b, 2) Math.pow(a, 2) Math.pow Math a 2 Math.pow(b, 2) Math.pow Math b 2 if(c<=d)
            ans++; c<=d c d ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main{
public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		}
} public class Main{
public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		}
} Main
import java.util.*;

public class Main{
public static void main(String[] args)
	{	Scanner sc = new Scanner(System.in);
     	int n = sc.nextInt();
     	int d = sc.nextInt();
     
     	int ans = 0;
     	for(int i=0; i<n; i++)
        {
          int a = sc.nextInt();
          int b = sc.nextInt();
     double c = Math.sqrt(Math.pow(a, 2) + Math.pow(b, 2));
          if(c<=d)
            ans++;
        }
     	System.out.println(ans);
  
		}
}