import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

        System.out.println(total);
    }
} import java.util.Scanner; Scanner java.util public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

        System.out.println(total);
    }
} Main public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

        System.out.println(total);
    } main {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

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

        int total = 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) total++;
        }

        System.out.println(total);
    }
} public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

        System.out.println(total);
    }
} Main
import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();

        int total = 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) total++;
        }

        System.out.println(total);
    }
}
