import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	}

} import java.util.Scanner; Scanner java.util public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	}

} Main public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	} main {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int D = sc.nextInt(); D sc.nextInt() sc.nextInt sc int answer = 0; answer 0 for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		} {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		} int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)); distance Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)) Math.sqrt Math Math.pow(x, 2) + Math.pow(y, 2) Math.pow(x, 2) Math.pow Math x 2 Math.pow(y, 2) Math.pow Math y 2 if(distance <= D) {
				answer++;
			} distance <= D distance D {
				answer++;
			} answer++ answer System.out.println(answer) System.out.println System.out System System.out answer String[] args args public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	}

} public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	}

} Main
import java.util.Scanner;

public class Main {

	public static void main(String[] args) {
		// TODO 自動生成されたメソッド・スタブ
		Scanner sc = new Scanner(System.in);
		//数取得
		int N = sc.nextInt();
		int D = sc.nextInt();

		int answer = 0;

		for(int i = 0; i < N; i++) {
			int x = sc.nextInt();
			int y = sc.nextInt();
			double distance = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
			//System.out.println(distance);

			if(distance <= D) {
				answer++;
			}
		}

		System.out.println(answer);
	}

}
