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 num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			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 num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			System.out.println(ans);
		}
	}

} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.close();
		int num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			System.out.println(ans);
		}
	} main {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		sc.close();
		int num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			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 num = 105; num 105 if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			System.out.println(ans);
		} n < 105 n 105 {
			System.out.println(0);
		} System.out.println(0) System.out.println System.out System System.out 0 {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			System.out.println(ans);
		} int ans = 0; ans 0 int count = 0; count 0 for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			} int i=num; int i=num; i num i<=n i n i+=2 i+=2 i 2 {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			} {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			} 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) {
					ans++;
				} count == 8 count 8 {
					ans++;
				} ans++ ans count = 0 count 0 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 num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			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 num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			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 num = 105;
		
		if(n < 105) {
			System.out.println(0);
		} else {
			int ans = 0;
			int count = 0;
			for(int i=num; i<=n; i+=2) {
				for(int j=1; j<=i; j++) {
					if(i%j == 0) {
						count++;
					}
				}
				if(count == 8) {
					ans++;
				}
				count = 0;
			}
			System.out.println(ans);
		}
	}

}