import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    }
} import java.util.*; util.* java public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    }
} Main public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    } main {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int N = Integer.parseInt(scan.next()); N Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan int count = 0; count 0 int ans = 0; ans 0 for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        } int i = 1; int i = 1; i 1 i <= N i N i+=2 i+=2 i 2 {

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        } {

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        } count = 0 count 0 for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            } int j = 1; int j = 1; j 1 j <= N j N j+=2 j+=2 j 2 {
                if(i%j == 0) count++;
            } {
                if(i%j == 0) count++;
            } if(i%j == 0) count++; i%j == 0 i%j i j 0 count++ count if(count == 8) ans ++; count == 8 count 8 ans ++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    }
} public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    }
} Main
import java.util.*;

public class Main {

    public static void main(String[] args) {

        Scanner scan = new Scanner(System.in);
        int N = Integer.parseInt(scan.next());

        int count = 0;
        int ans = 0;
        for(int i = 1; i <= N; i+=2){

            count = 0;

            for(int j = 1; j <= N; j+=2){
                if(i%j == 0) count++;
            }
            if(count == 8) ans ++;
        }

        System.out.println(ans);

    }
}