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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        System.out.println(count);
	} main {
        Scanner sc = new Scanner(System.in);
        int N = sc.nextInt();
        int D = sc.nextInt();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        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 int count = 0; count 0 for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        } int i = 0; int i = 0; i 0 i < N i N i++ i++ i {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        } {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        } int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2)); result 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 (result <= D * 1.0) {
                count++;
            } result <= D * 1.0 result D * 1.0 D 1.0 {
                count++;
            } count++ count 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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        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();

        int count = 0;
        for (int i = 0; i < N; i++) {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double result = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
            if (result <= D * 1.0) {
                count++;
            }
        }
        System.out.println(count);
	}
}