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

