import java.util.Scanner;
 
public class Main {
   public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
      
      int N = sc.nextInt();
	  double[] X = new double[N];
      double[] Y = new double[N];
      double D = sc.nextDouble();
      int cnt = 0;
     
      for(int i=0; i<N; i++) {
        X[i]=sc.nextDouble();
        Y[i]=sc.nextDouble();
      }
      
      for(int i=0; i<N; i++) {
        double dis = Math.sqrt(X[i]*X[i]+Y[i]*Y[i]);
        if(dis <= D) {
          cnt ++;
        } else {
          //cnt += 0;
          continue;
        }
      }
      System.out.println(cnt);
    }
}
/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