import java.util.Scanner;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int num = sc.nextInt();
        int distance = sc.nextInt();
        long x,y;
        int count = 0;

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