using System;

public class Program

{

    public static void Main()

    {

        int[] x= new int[10];

        int Tot=0;

        for (int i=0; i<10; i++)

        {  

            if ((i%3==0)||(i%5==0)) 

            {    

                x[i] = i;

                // Console.WriteLine(x[i]);    

                Tot += x[i];

            }

        }

        Console.WriteLine(Tot);

    }

}