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 = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        }
        sc.close();
        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 = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=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();

        int count = 0;

        for(int i = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        }
        sc.close();
        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 = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=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 int count = 0; count 0 for(int i = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        } int i = 1 ; int i = 1 ; i 1 i <= N i N i++ i++ i {
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        } {
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        } double p = sc.nextInt(); p sc.nextInt() sc.nextInt sc double q = sc.nextInt(); q sc.nextInt() sc.nextInt sc if(Math.sqrt(p*p+q*q)<=D){
                count++;
            } Math.sqrt(p*p+q*q)<=D Math.sqrt(p*p+q*q) Math.sqrt Math p*p+q*q p*p p p q*q q q D {
                count++;
            } 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();

        int count = 0;

        for(int i = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=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();

        int count = 0;

        for(int i = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        }
        sc.close();
        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 = 1 ; i <= N ; i++){
            double p = sc.nextInt();
            double q = sc.nextInt();

            if(Math.sqrt(p*p+q*q)<=D){
                count++;
            }
        

        }
        sc.close();
        System.out.println(count);
    }
}