using System;

using System.Collections.Generic;

public class Program

{

    public static void Main()

    {

​

           int num = getSum(new List<int>() { 15, 16, -66, 17, 18 });

            Console.WriteLine(num);

        }

​

        public static int getSum(List<int> list)

        {

            int currentSum = 0;

            for(int i = 0; i < list.Count; i++)

            {

                currentSum = currentSum + list[i];

                if(currentSum - list[i] > 0)

                {

​

                }

                else

                {

                    currentSum = list[i];

                }

​

            }

​

​

​

            if(currentSum < 0)

            {

                return 0;

            }

            else

            {

                return currentSum;

            }

​

​

        }

    }

​