import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		sc.close();
		int ans = 0;

		for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
} 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();
		sc.close();
		int ans = 0;

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

		for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		sc.close();
		int ans = 0;

		for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc sc.close() sc.close sc int ans = 0; ans 0 for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		} int i = 1; int i = 1; i 1 i <= N i N i++ i++ i {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		} {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		} if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			} i % 2 != 0 i % 2 i 2 0 {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			} int a = 0; a 0 for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				} int j = 1; int j = 1; j 1 j <= i j i j++ j++ j {
					if (i % j == 0) {
						a++;
					}
				} {
					if (i % j == 0) {
						a++;
					}
				} if (i % j == 0) {
						a++;
					} i % j == 0 i % j i j 0 {
						a++;
					} a++ a if (a == 8) {
					ans++;
				} a == 8 a 8 {
					ans++;
				} ans++ ans 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 N = sc.nextInt();
		sc.close();
		int ans = 0;

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

		for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int N = sc.nextInt();
		sc.close();
		int ans = 0;

		for (int i = 1; i <= N; i++) {
			if (i % 2 != 0) {
				int a = 0;
				for (int j = 1; j <= i; j++) {
					if (i % j == 0) {
						a++;
					}
				}
				if (a == 8) {
					ans++;
				}
			}
		}
		System.out.println(ans);
	}
}
