import java.util.Scanner;

public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    }
} import java.util.Scanner; Scanner java.util public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    }
} Main public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    } main {
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    } 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 for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        } int i = 1; int i = 1; i 1 i < n + 1 i n + 1 n 1 i += 2 i += 2 i 2 {
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        } {
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        } int count2 = 1; count2 1 for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            } int j = n / 2; int j = n / 2; j n / 2 n 2 j > 0 j 0 j-- j-- j {
                if(i % j == 0){
                    count2++;
                }
            } {
                if(i % j == 0){
                    count2++;
                }
            } if(i % j == 0){
                    count2++;
                } i % j == 0 i % j i j 0 {
                    count2++;
                } count2++ count2 if(count2 == 8){
                count++;
            } count2 == 8 count2 8 {
                count++;
            } count++ count System.out.println(count) System.out.println System.out System System.out count 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;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    }
} public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    }
} Main
import java.util.Scanner;

public class Main{
    public static void main(String args[]){
        
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        
        int count = 0;
        for(int i = 1; i < n + 1; i += 2){
            int count2 = 1;
            for(int j = n / 2; j > 0; j--){
                if(i % j == 0){
                    count2++;
                }
            }
            if(count2 == 8){
                count++;
            }
        }
        
        System.out.println(count);
    }
}
