import java.util.Scanner;

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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        }
        System.out.println(count);
    }
} import java.util.Scanner; Scanner 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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        } int i = 0 ; int i = 0 ; i 0 i < N i N i++ i++ i {
            int x = sc.nextInt();
            int y = sc.nextInt();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        } {
            int x = sc.nextInt();
            int y = sc.nextInt();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        } int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++; Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D 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 D 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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        }
        System.out.println(count);
    }
} Main
import java.util.Scanner;

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();
            if (Math.sqrt(Math.pow(x,2) + Math.pow(y,2)) <= D)
                count++;
        }
        System.out.println(count);
    }
}
