import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	}
} Main public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	} main {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	} Scanner scan = new Scanner(System.in); scan new Scanner(System.in) int N = scan.nextInt(); N scan.nextInt() scan.nextInt scan scan.close() scan.close scan int ans = 0; ans 0 for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		} int i = 1 ; int i = 1 ; i 1 i <= N i N i++ i++ i {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		} {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		} if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			} i % 2 == 1 i % 2 i 2 1 {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			} int cnt = 0; cnt 0 for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				} int j = 1 ; int j = 1 ; j 1 j <= i j i j++ j++ j {
					if (i % j == 0) {
						cnt++;
					}
				} {
					if (i % j == 0) {
						cnt++;
					}
				} if (i % j == 0) {
						cnt++;
					} i % j == 0 i % j i j 0 {
						cnt++;
					} cnt++ cnt if (cnt == 8) {
					ans++;
				} cnt == 8 cnt 8 {
					ans++;
				} ans++ ans System.out.print(ans) System.out.print System.out System System.out ans String[] args args public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	}
} public class Main {
	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		int N = scan.nextInt();
		scan.close();
		
		int ans = 0;
		for (int i = 1 ; i <= N ; i++) {
			if ( i % 2 == 1) {
				int cnt = 0;
				for (int j = 1 ; j <= i ; j++) {
					if (i % j == 0) {
						cnt++;
					}
				}
				if (cnt == 8) {
					ans++;
				}
			}
		}
		
		System.out.print(ans); 
	}
} Main
import java.util.Scanner;

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