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 total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	}
} 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 total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	}
} Main public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		sc.close();
		
		int total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	} main {
		
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		sc.close();
		
		int total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	} 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 total = 0; total 0 for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		} int a = 1 ; int a = 1 ; a 1 a <= N a N a += 2 a += 2 a 2 {
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		} {
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		} int count = 0; count 0 for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				} int b = 1 ; int b = 1 ; b 1 b <= a b a b += 2 b += 2 b 2 {
					if(a % b == 0){
						count++;
					}
				} {
					if(a % b == 0){
						count++;
					}
				} if(a % b == 0){
						count++;
					} a % b == 0 a % b a b 0 {
						count++;
					} count++ count if(count == 8){
				total++;
			} count == 8 count 8 {
				total++;
			} total++ total System.out.println(total) System.out.println System.out System System.out total 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 total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	}
} public class Main {

	public static void main(String[] args) {
		
		Scanner sc = new Scanner(System.in);
		
		int N = sc.nextInt();
		sc.close();
		
		int total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	}
} 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 total = 0;
		for(int a = 1 ; a <= N ; a += 2){
			int count = 0;
				for(int b = 1 ; b <= a ; b += 2){
					if(a % b == 0){
						count++;
					}
				}
			if(count == 8){
				total++;
			}				
		}		
		System.out.println(total);
	}
}