
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {

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

		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		
		int divisor = 0;
		int ans = 0;
		for (int i = 1; i <= n; i++) {
			if (i % 2 != 1) {
				continue;
			}
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					divisor++;
				}
			}
			if (divisor == 8) {
				ans++;
			}
			
			divisor = 0;
		}
		System.out.println(ans);
	} main {

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

		Scanner scan = new Scanner(System.in);
		int n = scan.nextInt();
		
		int divisor = 0;
		int ans = 0;
		for (int i = 1; i <= n; i++) {
			if (i % 2 != 1) {
				continue;
			}
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					divisor++;
				}
			}
			if (divisor == 8) {
				ans++;
			}
			
			divisor = 0;
		}
		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 divisor = 0;
		int ans = 0;
		for (int i = 1; i <= n; i++) {
			if (i % 2 != 1) {
				continue;
			}
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					divisor++;
				}
			}
			if (divisor == 8) {
				ans++;
			}
			
			divisor = 0;
		}
		System.out.println(ans);
	}
}