

import java.util.Scanner;

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

  private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  }
} 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();
    solve(N);
  }

  private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    solve(N);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    solve(N);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc solve(N) solve N String[] args args private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  } solve {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  } int ret = 0; ret 0 for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    } int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    } {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    } if (i % 2 == 0)
        continue; i % 2 == 0 i % 2 i 2 0 continue; int count = 0; count 0 for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      } int j = 1; int j = 1; j 1 j <= i j i j++ j++ j {
        if (i % j == 0)
          count++;
      } {
        if (i % j == 0)
          count++;
      } if (i % j == 0)
          count++; i % j == 0 i % j i j 0 count++ count if (count == 8)
        ret++; count == 8 count 8 ret++ ret System.out.println(ret) System.out.println System.out System System.out ret int N N public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    solve(N);
  }

  private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    solve(N);
  }

  private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  }
} Main


import java.util.Scanner;

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

  private static void solve(int N) {
    int ret = 0;
    for (int i = 1; i <= N; i++) {
      if (i % 2 == 0)
        continue;
      int count = 0;
      for (int j = 1; j <= i; j++) {
        if (i % j == 0)
          count++;
      }
      if (count == 8)
        ret++;
    }
    System.out.println(ret);
  }
}
