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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=d)count++;
        } int i=0; int i=0; i 0 i<n i n i++ i++ i {
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=d)count++;
        } {
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=d)count++;
        } long p = sc.nextLong(); p sc.nextLong() sc.nextLong sc long q = sc.nextLong(); q sc.nextLong() sc.nextLong sc double ans = Math.sqrt((p*p)+(q*q)); ans Math.sqrt((p*p)+(q*q)) Math.sqrt Math (p*p)+(q*q) (p*p) p p (q*q) q q if(ans<=d)count++; ans<=d ans 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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=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++){
            long p = sc.nextLong();
            long q = sc.nextLong();
            double ans = Math.sqrt((p*p)+(q*q));
            if(ans<=d)count++;
        }
        System.out.println(count);
    }
}