import java.util.*;

public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  }
} import java.util.*; util.* java public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  }
} Main public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int[] count = new int[N]; count new int[N] N int ans =0; ans 0 for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    } int i=1; int i=1; i 1 i<=N i N i++ i++ i {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    } {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    } count[i-1] =0 count[i-1] count i-1 i 1 0 for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      } int j=1; int j=1; j 1 j<=i j i j++ j++ j {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      } {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      } if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        } i % 2 == 1 i % 2 i 2 1 {
          if (i % j == 0) count[i-1]++;
        } if (i % j == 0) count[i-1]++; i % j == 0 i % j i j 0 count[i-1]++ count[i-1] count i-1 i 1 for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    } int i=1; int i=1; i 1 i<=N i N i++ i++ i {
      if (count[i-1] == 8) ans++;
    } {
      if (count[i-1] == 8) ans++;
    } if (count[i-1] == 8) ans++; count[i-1] == 8 count[i-1] count i-1 i 1 8 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 sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  }
} public class Main {
  public static void main(String[] args) {
    Scanner sc = new Scanner(System.in);
    int N = sc.nextInt();
    int[] count = new int[N];
    int ans =0;
    for (int i=1; i<=N; i++) {
      count[i-1] =0;
      for (int j=1; j<=i; j++) {
        if (i % 2 == 1) {
          if (i % j == 0) count[i-1]++;
        }
      }
    }
    for (int i=1; i<=N; i++) {
      if (count[i-1] == 8) ans++;
    }
    System.out.println(ans);
  }
} Main
import java.util.*;

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