import java.util.*;

public class Main {

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

        System.out.println(cnt);
    }
} 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 cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

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

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

        System.out.println(cnt);
    }
} public class Main {

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

        System.out.println(cnt);
    }
} Main
import java.util.*;

public class Main {

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

        int cnt = 0;
        int tmp = 0;
        for (int i = 1; i <= n; ++i) {
            for (int j = 1; j <= i; ++j) {
                if (i % j == 0) ++tmp;
            }
            if (tmp == 8 && i % 2 == 1) ++cnt;
            tmp = 0;
        }

        System.out.println(cnt);
    }
}