using System;

using System.Linq;

public class Program

{

    public static void Main()

    {

            //string numberLine = Console.ReadLine();

            //string[] strNumber = numberLine.Split(' ');

            //decimal result = 0;

​

            //for (int i = 0; i < strNumber.Length; i++)

            //{

            //    result += Convert.ToDecimal(strNumber[i]);

            //}

            //Console.WriteLine("{0} ", result);

        Console.WriteLine(Console.ReadLine().Split(' ').Sum(t => Convert.ToDecimal(t)));

    }

}