import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==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);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		}
		System.out.println(ans);
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		}
		System.out.println(ans);
	} main {
		Scanner sc = new Scanner(System.in);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		}
		System.out.println(ans);
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) final int N = sc.nextInt(); N sc.nextInt() sc.nextInt sc int ans = 0; ans 0 for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		} int i = 1; int i = 1; i 1 i <=N i N i+=2 i+=2 i 2 {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		} {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		} int divisor = 0; divisor 0 for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			} int j = 1; int j = 1; j 1 j <= i j i j+=2 j+=2 j 2 {
				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 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);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		}
		System.out.println(ans);
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==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);
		final int N = sc.nextInt(); //1-200
		int ans = 0;
		for (int i = 1; i <=N; i+=2) {
			int divisor = 0;
			for (int j = 1; j <= i; j+=2) {
				if (i%j==0) {
					divisor++;
				}
			}
			if(divisor==8) {
				ans++;
			}
		}
		System.out.println(ans);
	}
}