using System;

namespace Metod
{
    class Program
    {
       static void IncAfterMinus(int[] arr)
        {
            int i = 0;
            for (; i < arr.Length; ++i)
            {
                if (arr[i] < 0) break;
            }
            if (i != arr.Length - 1)
            arr[i + 1] = arr[i + 1] * 2;
        }
        static void Sredn(double[] arr)
        {
            double sum = 0;

            for (int i = 0; i < arr.Length; ++i)
            {
                sum += arr[i];
            }
            for (int i = 0; i < arr.Length; ++i)
            {
                arr[i] /= sum;
            }
        }
        static void Main(string[] args)
        {

            int[] arr = { 1, 2,3, -4, 5, 6 };
            double [] arr2 = { 1, 2, 3, -4, 5, 6 };
                IncAfterMinus(arr);
                Sredn(arr2);
            for (int i = 0; i < arr.Length; ++i)
            {
                Console.Write($"{arr[i]} ");
            }
            Console.WriteLine();
                for (int i = 0; i < arr2.Length; ++i)
                {
                    Console.Write($"{arr2[i]} ");
                }
            }
    }
}