import java.util.Scanner;
public class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  }
} import java.util.Scanner; Scanner java.util public class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  }
} Main public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  } main {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) int x = sc.nextInt(); x sc.nextInt() sc.nextInt sc long result = 0; result 0 for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    } int i = 1; int i = 1; i 1 i <= x i x i++ i++ i {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    } {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    } if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      } i % 3 == 0 && i % 5 == 0 i % 3 == 0 i % 3 i 3 0 i % 5 == 0 i % 5 i 5 0 {
    	 continue;
      } continue; if(i % 3 == 0)
      {
    	 continue;
      } i % 3 == 0 i % 3 i 3 0 {
    	 continue;
      } continue; if(i % 5 == 0)
      {
    	 continue;
      } i % 5 == 0 i % 5 i 5 0 {
    	 continue;
      } continue; result += i result i System.out.println(result) System.out.println System.out System System.out result String[] args args public class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  }
} public class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  }
} Main
import java.util.Scanner;
public class Main
{
  public static void main(String[] args)
  {
    Scanner sc = new Scanner(System.in);
    int x = sc.nextInt();
    long result = 0;
    for(int i = 1; i <= x; i++)
    {
      if(i % 3 == 0 && i % 5 == 0)
      {
    	 continue;
      }
      
      if(i % 3 == 0)
      {
    	 continue;
      }
      if(i % 5 == 0)
      {
    	 continue;
      }
      result += i;
    }
    System.out.println(result);
  }
}
