import java.util.Scanner;

public class Main{
	public static void main(String[] arg){
  		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
      	double[] x = new double[n];
      	double[] y = new double[n];
      	double len = sc.nextInt();
      int count = 0;
      for (int i=0;i<n;i++){
        x[i] = sc.nextDouble();
        y[i] = sc.nextDouble();
        if (Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2))<=len){
          count = count+1;
        }
      }
          System.out.println(count);
        
    }
}
/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