import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    }
} import java.io.*; io.* java import java.util.*; util.* java public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    } main {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) PrintWriter out = new PrintWriter(System.out); out new PrintWriter(System.out) final 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 = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        } {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        } int cnt = 0; cnt 0 for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            } int j = 1; int j = 1; j 1 j <= i j i j++ j++ j {
                if (i % j == 0) cnt++;
            } {
                if (i % j == 0) cnt++;
            } if (i % j == 0) cnt++; i % j == 0 i % j i j 0 cnt++ cnt if (i % 2 != 0 && cnt == 8) ans++; i % 2 != 0 && cnt == 8 i % 2 != 0 i % 2 i 2 0 cnt == 8 cnt 8 ans++ ans out.println(ans) out.println out ans out.flush() out.flush out String[] args args public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    }
} Main
import java.io.*;
import java.util.*;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        PrintWriter out = new PrintWriter(System.out);

        final int N = Integer.parseInt(sc.next());
        int ans = 0;
        
        for (int i = 1; i <= N; i++) {
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) cnt++;
            }
            if (i % 2 != 0 && cnt == 8) ans++;
        }

        out.println(ans);
        
        out.flush();
    }
}