
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

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

} import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

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

} Main public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int fact = 0;
            for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            }
            if (fact == 8) {
                ans++;
            }
        }
        System.out.println(ans);
    } main {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

        int ans = 0;
        for (int i = 1; i <= n; i += 2) {
            int fact = 0;
            for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            }
            if (fact == 8) {
                ans++;
            }
        }
        System.out.println(ans);
    } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int n = Integer.parseInt(scan.next()); n Integer.parseInt(scan.next()) Integer.parseInt Integer scan.next() scan.next scan scan.close() scan.close scan int ans = 0; ans 0 for (int i = 1; i <= n; i += 2) {
            int fact = 0;
            for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            }
            if (fact == 8) {
                ans++;
            }
        } int i = 1; int i = 1; i 1 i <= n i n i += 2 i += 2 i 2 {
            int fact = 0;
            for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            }
            if (fact == 8) {
                ans++;
            }
        } {
            int fact = 0;
            for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            }
            if (fact == 8) {
                ans++;
            }
        } int fact = 0; fact 0 for (int j = 1; j <= n; j++) {
                if (i % j == 0) {
                    fact++;
                }
            } int j = 1; int j = 1; j 1 j <= n j n j++ j++ j {
                if (i % j == 0) {
                    fact++;
                }
            } {
                if (i % j == 0) {
                    fact++;
                }
            } if (i % j == 0) {
                    fact++;
                } i % j == 0 i % j i j 0 {
                    fact++;
                } fact++ fact if (fact == 8) {
                ans++;
            } fact == 8 fact 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) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

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

} public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

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

} Main

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
        Scanner scan = new Scanner(System.in);
        int n = Integer.parseInt(scan.next());
        scan.close();

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

}
