

import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	}

} 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();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	}

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

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	} main {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	} 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 count2 = 0; count2 0 for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		} int i=1 ; int i=1 ; i 1 i<=n i n i++ i++ i {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		} {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		} for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			} int j=1 ; int j=1 ; j 1 j<=i j i j++ j++ j {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			} {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			} if(i % 2 == 1 && i % j == 0) {
					count ++;
				} i % 2 == 1 && i % j == 0 i % 2 == 1 i % 2 i 2 1 i % j == 0 i % j i j 0 {
					count ++;
				} count ++ count if(count == 8) {
				count2++;
			} count == 8 count 8 {
				count2++;
			} count2++ count2 count = 0 count 0 System.out.println(count2) System.out.println System.out System System.out count2 sc.close() sc.close sc String[] args args public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	}

} public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	}

} Main


import java.util.Scanner;

public class Main {

	public static void main(String[] args) {

		Scanner sc = new Scanner(System.in);

		int n = sc.nextInt();
		int count = 0; //約数の数
		int count2 = 0;

		for(int i=1 ; i<=n ; i++) {
			for(int j=1 ; j<=i ; j++) {
				if(i % 2 == 1 && i % j == 0) {
					count ++;
				}
			}
			if(count == 8) {
				count2++;
			}
			count = 0;
		}

		System.out.println(count2);


		sc.close();

	}

}
