import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    }
}

class Monmo {
    
} import java.util.*; util.* java import java.io.*; io.* java public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    }
} Main public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= 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 double d = sc.nextDouble(); d sc.nextDouble() sc.nextDouble sc int count = 0; count 0 for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= 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();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        } {
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        } int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc int y = sc.nextInt(); y sc.nextInt() sc.nextInt sc double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2)); rad 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(rad <= d)count++; rad <= d rad d count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args class Monmo {
    
} Monmo public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    }
} public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    }
} Main
import java.util.*;
import java.io.*;

public class Main {
    public static void main(String[] args) throws Exception {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt(); 
        double d = sc.nextDouble(); 
        int count = 0;
        for(int i=0;i<n;i++){
            int x = sc.nextInt();
            int y = sc.nextInt();
            double rad = Math.sqrt(Math.pow(x,2)+Math.pow(y,2));
            if(rad <= d)count++;
        }
        System.out.println(count);
    }
}

class Monmo {
    
}
