import java.util.Scanner;

public class Main{
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int dis = sc.nextInt();

        int count = 0;
        Long x, y;

        for(int i = 0; i < num; i++){
            x = sc.nextLong(); y = sc.nextLong();
            if( Math.sqrt(x*x+y*y) <= dis ){
                count++;
            }
        }

        System.out.println(count);
        sc.close();
    }
}
/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