import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    }
  
  	
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    }
  
  	
} Main public static void main(String[] args) {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    } main {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    } Scanner input = new Scanner(System.in); input new Scanner(System.in) int A = input.nextInt(); A input.nextInt() input.nextInt input int ans = 0; ans 0 for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        } int i = 1; int i = 1; i 1 i <= A i A i+=2 i+=2 i 2 {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        } {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        } int count = 0; count 0 int j = 1; j 1 while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          } count < 10 && j <= i count < 10 count 10 j <= i j i {
          	if (i % j == 0) {
              count++;
            }
            j++;
          } if (i % j == 0) {
              count++;
            } i % j == 0 i % j i j 0 {
              count++;
            } count++ count j++ j if (count == 8) {
          	ans++;
          } count == 8 count 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 input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    }
  
  	
} public class Main {
	public static void main(String[] args) {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    }
  
  	
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
    	Scanner input = new Scanner(System.in);
      	int A = input.nextInt();
      	int ans = 0;
      	for (int i = 1; i <= A; i+=2) {
          int count = 0;
          int j = 1;
          while (count < 10 && j <= i) {
          	if (i % j == 0) {
              count++;
            }
            j++;
          }
          if (count == 8) {
          	ans++;
          }
        	
        }
		System.out.print(ans);

    }
  
  	
}
