import java.util.*;


public class Main {
	static int j =0;
	public static void main(String[] args) {
		 Scanner sc = new Scanner(System.in);
		 int x = sc.nextInt();
		 int y = sc.nextInt();
		 int c=0;
		 for(int i=0;i<x;i++) {
			 double a= sc.nextInt();
			 double b= sc.nextInt();
			 
			 if(Math.sqrt(a*a+b*b)<=y) {
				 c++;
			 }
		 }
		 System.out.println(c);
	}


}

/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