import java.util.Scanner;

public class Main {
	public static void main(String[] args){



		try (Scanner scanner = new Scanner(System.in)) {

			long num = scanner.nextInt();
			
			long distance = scanner.nextInt();
			distance = distance * distance;
			
			
			long cnt = 0;
			
			for(long i = 0; i < num; i++) {
				long x = scanner.nextInt();
				long y = scanner.nextInt();
				
				if (x * x + y * y <= distance) {
					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