import java.util.*;

public class Main{
	static public void main(String[] args){
		Scanner sc=new Scanner(System.in);
		int n=sc.nextInt();
		long d=sc.nextLong();
		
		long[] x=new long[n];
		long[] y=new long[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextLong();
			y[i]=sc.nextLong();
		}
		
		for(int i=0;i<n;i++){
			long num=x[i]*x[i]+y[i]*y[i];
			if(num<=d*d)count++;
		}
		System.out.println(count);
		sc.close();
		return;
	}
}
/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