import java.util.Scanner;

public class Main
{
    public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    }
} import java.util.Scanner; Scanner java.util public class Main
{
    public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    }
} Main public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    } main {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    } Scanner key = new Scanner(System.in); key new Scanner(System.in) int num = key.nextInt(); num key.nextInt() key.nextInt key long sum = 0; sum 0 for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        } int i=0; int i=0; i 0 i<=num i num i++ i++ i {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        } {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        } if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            } i % 3 == 0 || i % 5 == 0 i % 3 == 0 i % 3 i 3 0 i % 5 == 0 i % 5 i 5 0 continue; {
                sum = sum + i;
            } sum = sum + i sum sum + i sum i System.out.println(sum) System.out.println System.out System System.out sum String [] args args public class Main
{
    public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    }
} public class Main
{
    public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    }
} Main
import java.util.Scanner;

public class Main
{
    public static void main(String [] args)
    {
        Scanner key = new Scanner(System.in);
        int num = key.nextInt();
        long sum = 0;
        for(int i=0; i<=num; i++)
        {
            
            if(i % 3 == 0 || i % 5 == 0)
                continue;
            else
            {
                sum = sum + i;
            }
                
            
        }
        System.out.println(sum);
    }
}