import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    }
} Main public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    } main {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = Integer.parseInt(sc.next()); n Integer.parseInt(sc.next()) Integer.parseInt Integer sc.next() sc.next sc int ans = 0; ans 0 for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        } int i = 105; int i = 105; i 105 i <= n i n i += 2 i += 2 i 2 {
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        } {
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        } int count = 0; count 0 for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            } int j = 1; int j = 1; j 1 j <= n j n j++ j++ j {
                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 sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    }
} public class Main {

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    }
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        
        Scanner sc = new Scanner(System.in);
        
        int n = Integer.parseInt(sc.next());
        
        int ans = 0;
        for(int i = 105; i <= n; i += 2){
            int count = 0;
            for(int j = 1; j <= n; j++){
                if(i % j == 0) count++;
            }
            if(count == 8) ans++;
        }
        
        System.out.println(ans);
    }
}