
import java.util.*;
//import java.util.stream.Collectors;

public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	}
} import java.util.*; util.* java public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int d = Integer.parseInt(sc.next()); d Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int count = 0; count 0 for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		} {
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		} long x = Integer.parseInt(sc.next()); x Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc long y = Integer.parseInt(sc.next()); y Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc if(Math.sqrt(x * x + y * y) <= d){
				count++;
			} Math.sqrt(x * x + y * y) <= d Math.sqrt(x * x + y * y) Math.sqrt Math x * x + y * y x * x x x y * y y y d {
				count++;
			} count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	}
} public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	}
} Main

import java.util.*;
//import java.util.stream.Collectors;

public class Main{
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		
		int n = Integer.parseInt(sc.next());
		int d = Integer.parseInt(sc.next());
		int count = 0;
		for(int i=0; i<n; i++){
			long x = Integer.parseInt(sc.next());
			long y = Integer.parseInt(sc.next());
			if(Math.sqrt(x * x + y * y) <= d){
				count++;
			}
		}
		System.out.println(count);
	}
}
