import java.util.*;

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

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	}
} import java.util.*; util.* java public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		long x = 0;
		long y = 0;
		int count = 0;
		double distance = 0;

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		long x = 0;
		long y = 0;
		int count = 0;
		double distance = 0;

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		long x = 0;
		long y = 0;
		int count = 0;
		double distance = 0;

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	} 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 long x = 0; x 0 long y = 0; y 0 int count = 0; count 0 double distance = 0; distance 0 for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		} int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		} {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		} x = sc.nextLong() x sc.nextLong() sc.nextLong sc y = sc.nextLong() y sc.nextLong() sc.nextLong sc distance = Math.hypot(x, y) distance Math.hypot(x, y) Math.hypot Math x y if (distance <= D) count++; distance <= D distance D count++ count sc.close() sc.close sc System.out.println(count) System.out.println System.out System System.out count String[] args args public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		long x = 0;
		long y = 0;
		int count = 0;
		double distance = 0;

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		int D = sc.nextInt();
		long x = 0;
		long y = 0;
		int count = 0;
		double distance = 0;

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	}
} Main
import java.util.*;

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

		for (int i = 0; i < N; i++ ) {
			x = sc.nextLong();
			y = sc.nextLong();
			distance = Math.hypot(x, y);
			if (distance <= D) count++;
		}

		sc.close();

		System.out.println(count);
	}
}