import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int a = sc.nextInt();
		// スペース区切りの整数の入力
		long b = sc.nextLong();
		// 文字列の入力
		long[] d = new long[a];
		long[] e = new long[a];
		for(int i = 0; i < a; i++){
			d[i] = sc.nextLong();
			e[i] = sc.nextLong();
		} 
		int f = 0;
		
		for(int i = 0; i < a; i++){
			if(Math.sqrt(d[i] * d[i] + e[i] * e[i]) <= b){
				f++;
			}
		}
		System.out.println(f);
		
		
	}
}
/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