import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  }
} 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 ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  }
} Main public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  } main {
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int n = sc.nextInt(); n sc.nextInt() sc.nextInt sc int ans = 0; ans 0 int count = 0; count 0 if(n < 105){
      System.out.println(0);
      return;
    } n < 105 n 105 {
      System.out.println(0);
      return;
    } System.out.println(0) System.out.println System.out System System.out 0 return; for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    } int i = 105; int i = 105; i 105 i<=n i n i++ i++ i {
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    } {
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    } if(i % 2 == 0){
        continue;
      } i % 2 == 0 i % 2 i 2 0 {
        continue;
      } continue; count = 0 count 0 for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      } int j = 1; int j = 1; j 1 j<=i j i j++ j++ j {
        if(i % j == 0){
          count++;
        }
      } {
        if(i % j == 0){
          count++;
        }
      } if(i % j == 0){
          count++;
        } i % j == 0 i % j i j 0 {
          count++;
        } count++ count if(count == 8){
        ans++;
      } count == 8 count 8 {
        ans++;
      } ans++ ans System.out.println(ans) System.out.println System.out System System.out ans String[] args args public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  }
} public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  }
} Main
import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    int n = sc.nextInt();
    int ans = 0;
    int count = 0;
    if(n < 105){
      System.out.println(0);
      return;
    }
    for(int i = 105;i<=n;i++){
      if(i % 2 == 0){
        continue;
      }
      count = 0;
      for(int j = 1;j<=i;j++){
        if(i % j == 0){
          count++;
        }
      }
      if(count == 8){
        ans++;
      }
    }
    System.out.println(ans);
  }
}
