import java.util.*;

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

    int n=sc.nextInt();
    int count=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==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=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==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=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==8){
        ans++;
      }
    }
    System.out.println(ans);

	} main {
 		Scanner sc = new Scanner(System.in);

    int n=sc.nextInt();
    int count=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==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=0; count 0 int ans=0; ans 0 for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==8){
        ans++;
      }
    } int i=1; int i=1; i 1 i<=n i n i++ i++ i {
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==8){
        ans++;
      }
    } {
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==8){
        ans++;
      }
    } count=0 count 0 for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      } int s=i; int s=i; s i s>=1 s 1 s-- s-- s {
        if(i%s==0){
          count++;
        }
      } {
        if(i%s==0){
          count++;
        }
      } if(i%s==0){
          count++;
        } i%s==0 i%s i s 0 {
          count++;
        } count++ count if(i%2!=0 && count==8){
        ans++;
      } i%2!=0 && count==8 i%2!=0 i%2 i 2 0 count==8 count 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 sc = new Scanner(System.in);

    int n=sc.nextInt();
    int count=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==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=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==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=0;
    int ans=0;
    for(int i=1;i<=n;i++){
      count=0;
      for(int s=i;s>=1;s--){
        if(i%s==0){
          count++;
        }
      }
      if(i%2!=0 && count==8){
        ans++;
      }
    }
    System.out.println(ans);

	}
}
