import java.util.Scanner;

public class Main {

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

        System.out.println(ans);
    }
} import java.util.Scanner; Scanner java.util public class Main {

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

        System.out.println(ans);
    } final Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        } {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        } if (i % 2 == 0) {
                continue;
            } i % 2 == 0 i % 2 i 2 0 {
                continue;
            } continue; 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++ cnt if (cnt == 8) {
                ans++;
            } cnt == 8 cnt 8 {
                ans++;
            } 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) {
        final Scanner sc = new Scanner(System.in);

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

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

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

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

public class Main {

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

        final int N = sc.nextInt();

        int ans = 0;

        for (int i = 1; i <= N; i++) {
            if (i % 2 == 0) {
                continue;
            }
            int cnt = 0;
            for (int j = 1; j <= i; j++) {
                if (i % j == 0) {
                    cnt++;
                }
            }
            if (cnt == 8) {
                ans++;
            }
        }

        System.out.println(ans);
    }
}
