import java.util.Scanner;

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

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String arg[]) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	}
} Main public static void main(String arg[]) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	} main {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	} 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 int sum = 0; sum 0 for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		} int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		} {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		} if (i % 2 == 0) {
				continue;
			} i % 2 == 0 i % 2 i 2 0 {
				continue;
			} continue; 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 count = 0 count 0 System.out.print(sum) System.out.print System.out System System.out sum String arg[] arg public class Main {
	public static void main(String arg[]) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	}
} public class Main {
	public static void main(String arg[]) {

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	}
} Main
import java.util.Scanner;

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

		Scanner sc = new Scanner(System.in);

		int N = sc.nextInt();
		int count = 0;
		int sum = 0;

		for (int i = 1; i <= N; i++) {

			if (i % 2 == 0) {
				continue;
			}

			for (int j = 1; j <= i; j++) {
				if (i % j == 0) {
					count++;
				}
			}

			if (count == 8) {
				sum++;
			}
			count = 0;
		}

		System.out.print(sum);
	}
}