/* package whatever; // don't place package name! */

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


public class Main {
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
	public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    }
} import java.util.*; util.* java import java.lang.*; lang.* java import java.io.*; io.* java public class Main {
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
	public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    }
} Main public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    } main {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    } FastReader sc = new FastReader(); sc new FastReader() int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc double d = sc.nextInt(); d sc.nextInt() sc.nextInt sc int[] x = new int[n]; x new int[n] n int[] y = new int[n]; y new int[n] n int count=0; count 0 for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		} int i=0; int i=0; i 0 i<n i n i++ i++ i {
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		} {
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		} x[i]=sc.nextInt() x[i] x i sc.nextInt() sc.nextInt sc y[i]=sc.nextInt() y[i] y i sc.nextInt() sc.nextInt sc double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2)); dis Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2)) Math.sqrt Math Math.pow(x[i],2)+Math.pow(y[i],2) Math.pow(x[i],2) Math.pow Math x[i] x i 2 Math.pow(y[i],2) Math.pow Math y[i] y i 2 if(dis<=d) count++; dis<=d dis d count++ count System.out.println(count) System.out.println System.out System System.out count String[] args args static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } FastReader BufferedReader br; br StringTokenizer st; st public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } FastReader { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } br = new BufferedReader(new
                     InputStreamReader(System.in)) br new BufferedReader(new
                     InputStreamReader(System.in)) String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } next { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } st == null || !st.hasMoreElements() st == null st null !st.hasMoreElements() st.hasMoreElements() st.hasMoreElements st { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } IOException  e { 
                    e.printStackTrace(); 
                } e.printStackTrace() e.printStackTrace e { 
                    st = new StringTokenizer(br.readLine()); 
                } st = new StringTokenizer(br.readLine()) st new StringTokenizer(br.readLine()) return st.nextToken(); st.nextToken() st.nextToken st int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } nextInt { 
            return Integer.parseInt(next()); 
        } return Integer.parseInt(next()); Integer.parseInt(next()) Integer.parseInt Integer next() next long nextLong() 
        { 
            return Long.parseLong(next()); 
        } nextLong { 
            return Long.parseLong(next()); 
        } return Long.parseLong(next()); Long.parseLong(next()) Long.parseLong Long next() next double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } nextDouble { 
            return Double.parseDouble(next()); 
        } return Double.parseDouble(next()); Double.parseDouble(next()) Double.parseDouble Double next() next String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } nextLine { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } String str = ""; str "" try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } catch (IOException e) 
            { 
                e.printStackTrace(); 
            } IOException e { 
                e.printStackTrace(); 
            } e.printStackTrace() e.printStackTrace e { 
                str = br.readLine(); 
            } str = br.readLine() str br.readLine() br.readLine br return str; str public class Main {
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
	public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    }
} public class Main {
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
	public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    }
} Main
/* package whatever; // don't place package name! */

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


public class Main {
	static class FastReader 
    { 
        BufferedReader br; 
        StringTokenizer st; 
  
        public FastReader() 
        { 
            br = new BufferedReader(new
                     InputStreamReader(System.in)); 
        } 
  
        String next() 
        { 
            while (st == null || !st.hasMoreElements()) 
            { 
                try
                { 
                    st = new StringTokenizer(br.readLine()); 
                } 
                catch (IOException  e) 
                { 
                    e.printStackTrace(); 
                } 
            } 
            return st.nextToken(); 
        } 
  
        int nextInt() 
        { 
            return Integer.parseInt(next()); 
        } 
  
        long nextLong() 
        { 
            return Long.parseLong(next()); 
        } 
  
        double nextDouble() 
        { 
            return Double.parseDouble(next()); 
        } 
  
        String nextLine() 
        { 
            String str = ""; 
            try
            { 
                str = br.readLine(); 
            } 
            catch (IOException e) 
            { 
                e.printStackTrace(); 
            } 
            return str; 
        } 
    } 
	public static void main (String[] args) {
		FastReader sc = new FastReader();
		int n = sc.nextInt();
		double d = sc.nextInt();
		
		int[] x = new int[n];
			int[] y = new int[n];
		int count=0;
		for(int i=0;i<n;i++){
			x[i]=sc.nextInt();
				y[i]=sc.nextInt();
				double dis = Math.sqrt(Math.pow(x[i],2)+Math.pow(y[i],2));
				if(dis<=d) count++;
		}
		System.out.println(count);
    }
}
