import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    }
    
}
 import java.util.Scanner; Scanner java.util public class Main {

    public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    }
    
} Main public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    } main {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		} int i = 1; int i = 1; i 1 i <= N i N i = i + 2 i = i + 2 i i + 2 i 2 {
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		} {
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		} int cnt = 0; cnt 0 for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			} int j = 1; int j = 1; j 1 j <= i j i j++ j++ j {
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			} {
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			} int tmp = i % j; tmp i % j i j if(tmp == 0){
					cnt ++;
				} tmp == 0 tmp 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 sc.close() sc.close sc return ; String[] args args public class Main {

    public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    }
    
} public class Main {

    public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    }
    
} Main
import java.util.Scanner;

public class Main {

    public static void main(String[] args) {
    	
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int N = sc.nextInt();

		int ans = 0;
		for(int i = 1;i <= N;i = i + 2){
			int cnt = 0;
			for(int j = 1;j <= i;j++){
				int tmp = i % j;
				if(tmp == 0){
					cnt ++;
				}
			}
			if(cnt == 8){
				ans ++;
			}
		}
		
		System.out.println(ans);
		
   		sc.close();
        return ;

    }
    
}

