import java.util.*;
public class Main{
  public static 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];
    for(int i=0 ; i<n ; i++){
      x[i] = sc.nextLong();
      y[i] = sc.nextLong();
    }
    long Dis = d*d;
    int ans = 0;
    for(int i=0 ; i<n ; i++){
      long kyori = (x[i]*x[i]) + (y[i]*y[i]);
      if(kyori<=Dis){
        ans++;
      }
    }
    System.out.println(ans);
  }
}

/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