import java.util.Scanner;

public class Main {

  public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    System.out.println(ans);

  }

} Main public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    System.out.println(ans);

  } main {

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    System.out.println(ans);

  } Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int n = scan.nextInt(); n scan.nextInt() scan.nextInt scan int ans = 0; ans 0 for (int i = 1; i <= n; i += 2) {
      int cnt = 0;
      for (int j = 1; (j <= i) && (cnt <= 8); j++) {
        if (i % j == 0) {
          cnt++;
        }
      }
      if (cnt == 8) {
        ans++;
      }
    } int i = 1; int i = 1; i 1 i <= n i n i += 2 i += 2 i 2 {
      int cnt = 0;
      for (int j = 1; (j <= i) && (cnt <= 8); j++) {
        if (i % j == 0) {
          cnt++;
        }
      }
      if (cnt == 8) {
        ans++;
      }
    } {
      int cnt = 0;
      for (int j = 1; (j <= i) && (cnt <= 8); j++) {
        if (i % j == 0) {
          cnt++;
        }
      }
      if (cnt == 8) {
        ans++;
      }
    } int cnt = 0; cnt 0 for (int j = 1; (j <= i) && (cnt <= 8); j++) {
        if (i % j == 0) {
          cnt++;
        }
      } int j = 1; int j = 1; j 1 (j <= i) && (cnt <= 8) (j <= i) j i (cnt <= 8) cnt 8 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) {

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    System.out.println(ans);

  }

} public class Main {

  public static void main(String[] args) {

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    Scanner scan = new Scanner(System.in);

    int n = scan.nextInt();
    int ans = 0;

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

    System.out.println(ans);

  }

}