

import java.util.*;
import java.io.*;

public class Main 

{ 

	 static FastReader sc=new FastReader(); 
	 static double c(long a,long b) {
		 return Math.sqrt((a*a+b*b));
	 }
	  public static void main(String[] args) 
    {
    	int n = i();
        int m = i();
        long A[]=new long[n];
        long B[]=new long[n];
        for(int i=0;i<n;i++) {
        	A[i]=Math.abs(i());
        	B[i]=Math.abs(i());
        }
        int c=0;
        for(int i=0;i<n;i++) {
        	
        	if(c(A[i],B[i])<=m) {
        		c++;
        	}
        }
        System.out.println(c);
		
    }
      	
        	
			
	
	
		
   static void input(int A[]) {
	   for(int i=0;i<A.length;i++) {
		   A[i]=sc.nextInt();
	   }
   }
     static int i() {
    	 return sc.nextInt();
     }
     static String s() {
    	 return sc.next();
     }
     static long l() {
    	 return sc.nextLong();
     }  
        static void shuffleArray(int[] arr){
        int n = arr.length;
        Random rnd = new Random();
        for(int i=0; i<n; ++i){
            int tmp = arr[i];
            int randomPos = i + rnd.nextInt(n-i);
            arr[i] = arr[randomPos];
            arr[randomPos] = tmp;
        }   
}
  
        
        
    static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
} 


/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz