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

