import java.util.Scanner;
public class Main {
	 static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	}
	
	
		
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	}

} import java.util.Scanner; Scanner java.util public class Main {
	 static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	}
	
	
		
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	}

} Main static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	} count {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	} int cnt = 0; cnt 0 for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		} int i = 1; int i = 1; i 1 i <= n i n i++ i++ i {
			if(n%i == 0) {
				cnt++;
			}
		} {
			if(n%i == 0) {
				cnt++;
			}
		} if(n%i == 0) {
				cnt++;
			} n%i == 0 n%i n i 0 {
				cnt++;
			} cnt++ cnt return cnt; cnt int n n public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	} main {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	} Scanner stdIn = new Scanner(System.in); stdIn new Scanner(System.in) int n = stdIn.nextInt(); n stdIn.nextInt() stdIn.nextInt stdIn int cnt = 0; cnt 0 for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		} int i = 1; int i = 1; i 1 i <=n i n i++ i++ i {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		} {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		} if(i%2 == 0) {
				continue;
			} i%2 == 0 i%2 i 2 0 {
				continue;
			} continue; if(count(i)==8) {
				cnt++;
			} count(i)==8 count(i) count i 8 {
				cnt++;
			} cnt++ cnt System.out.println(cnt) System.out.println System.out System System.out cnt String[] args args public class Main {
	 static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	}
	
	
		
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	}

} public class Main {
	 static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	}
	
	
		
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	}

} Main
import java.util.Scanner;
public class Main {
	 static int count(int n) {
		int cnt = 0;
		for(int i = 1; i <= n; i++) {
			if(n%i == 0) {
				cnt++;
			}
		}
		return cnt;
	}
	
	
		
	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int n = stdIn.nextInt();
		int cnt = 0;
		for(int i = 1; i <=n; i++) {
			if(i%2 == 0) {
				continue;
			}
			if(count(i)==8) {
				cnt++;
			}
		}
		
		System.out.println(cnt);
		
		
	}

}
