import java.util.Scanner;

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

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