class SumCalc
{
    static void Main(string[] args)
    {
        string numbers = "1, 2, 3, 4, 5, 6, 7, 8, 9, 10";
    // :v
        int sum = numbers.Split(' ').Select(n => int.Parse(n.Replace(",", ""))).ToArray().Sum();

        Console.WriteLine(sum);
    }
}