import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	static int ans[];
	static int count = 0;

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	}
} import java.io.BufferedReader; BufferedReader java.io import java.io.IOException; IOException java.io import java.io.InputStreamReader; InputStreamReader java.io public class Main {

	static int ans[];
	static int count = 0;

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	}
} Main static int ans[]; ans static int count = 0; count 0 public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	} main {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	} BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); br new BufferedReader(new InputStreamReader(System.in)) int n = Integer.parseInt(br.readLine()); n Integer.parseInt(br.readLine()) Integer.parseInt Integer br.readLine() br.readLine br int ans = 0; ans 0 for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		} int i = 1; int i = 1; i 1 i <= n i n i += 2 i += 2 i 2 {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		} {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		} int count = 0; count 0 for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			} int j = 1; int j = 1; j 1 j <= n j n 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) {
				ans++;
			} count == 8 count 8 {
				ans++;
			} ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String args[] args public class Main {

	static int ans[];
	static int count = 0;

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	}
} public class Main {

	static int ans[];
	static int count = 0;

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	}
} Main
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {

	static int ans[];
	static int count = 0;

	public static void main(String args[]) throws IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));

		int n = Integer.parseInt(br.readLine());

		int ans = 0;
		for (int i = 1; i <= n; i += 2) {
			int count = 0;
			for (int j = 1; j <= n; j++) {
				if (i % j == 0) {
					count++;
				}
			}
			if (count == 8) {
				ans++;
			}
		}

		System.out.println(ans);
	}
}
