import java.util.Scanner;

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

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

    int b = 0;
    for (int i = 1; i <= n; i++) {
      int a = 0;
      for (int j = 1; j <= i; j++) {
        if (i % 2 == 1 && i % j == 0) {
          a++;
        }
      }
      if (a == 8) {
        b++;
      }
    }
    System.out.println(b);
  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();

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

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

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