import java.util.*;

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

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