using System;
using System.Numerics;
public class Program
{
    public static void Main()
    {
        BigInteger num = BigInteger.Parse(Console.ReadLine() ?? string.Empty);
        //string[] pass = (Console.ReadLine() ?? string.Empty).Trim().Split(' ');
        //string a = Console.ReadLine() ?? string.Empty;
        


        Console.WriteLine(num * 10);
    }
}