import java.util.*;
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];
		int cnt = 0;

		for(int i=0;i<n;i++){
			x[i] = sc.nextLong();
			y[i] = sc.nextLong();
		}

		long l = 0l;

		for(int i=0;i<n;i++){
			l = (x[i] * x[i]) + (y[i] * y[i]); 
			if(d >= Math.sqrt(l)){
				cnt++;
				
			}
		}

		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