using System;

using System.Collections.Generic;

using System.Linq;

​

public class MaxSum

{

    public static int FindSum(List<int> list)

    {

       int sum = list.Sum();

        return sum;

    }

​

    public static void Main(string[] args)

    {

        List<int> list = new List<int> { 5, 9, 7, 11 };

        Console.WriteLine(FindSum(list));

    }

}