import java.util.*;

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

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