import java.util.Scanner;
public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	} main {
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	} Scanner stdIn=new Scanner(System.in); stdIn new Scanner(System.in) int N=stdIn.nextInt(); N stdIn.nextInt() stdIn.nextInt stdIn int ans=0; ans 0 for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		} int i=105; int i=105; i 105 i<=N i N i+=2 i+=2 i 2 {
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		} {
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		} int a=0; a 0 for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			} int j=1; int j=1; j 1 j<=i j i j++ j++ j {
				if(i%j==0)
					a++;
			} {
				if(i%j==0)
					a++;
			} if(i%j==0)
					a++; i%j==0 i%j i j 0 a++ a if(a==8)
				ans++; a==8 a 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)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	}
} public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;
public class Main {
	public static void main(String[] args)throws Exception{
		Scanner stdIn=new Scanner(System.in);
		int N=stdIn.nextInt();
		int ans=0;
		for(int i=105;i<=N;i+=2){
			int a=0;
			for(int j=1;j<=i;j++){
				if(i%j==0)
					a++;
			}
			if(a==8)
				ans++;
		}
		System.out.println(ans);
	}
}
