using System;
using System.Linq;
class Program
{
    static void Main()
    {
        double totalWater = double.Parse(Console.ReadLine());
        double[] bottlesIncome = Console.ReadLine().Split().Select(double.Parse).ToArray();
        double bootleCapacity = double.Parse(Console.ReadLine());

        double totalCapacity = bottlesIncome.Length * bootleCapacity;
        double waterInBottles = totalCapacity - bottlesIncome.Sum();

        if (waterInBottles <= totalWater) ///Enough water
        {
            Console.WriteLine("Enough water!");
            Console.WriteLine("Water left: {0}l.", totalWater - waterInBottles);
        }
        else  //Not enough water
        {
            double notEnoughtCapacity = totalCapacity - totalWater;

            int ostatak = (int)notEnoughtCapacity % (int)bootleCapacity;
            int bootles;

            if (ostatak == 0)
            {
                bootles = (int)notEnoughtCapacity / (int)bootleCapacity;
            }
            else
            {
                bootles = (int)notEnoughtCapacity / (int)bootleCapacity;
                bootles++;
            }
            int[] x = new int[bootles];
            if ((int)totalWater % 2 == 0) //even
            {
                int plus = bottlesIncome.Length - bootles;

                for (int i = bootles - 1; i >= 0; i--)  // show direction of filing from left to right
                {
                    x[i] = i + plus;
                }
            }
            else//odd
            {
                for (int i = bootles - 1; i >= 0; i--)   // show direction of filing from right to left
                {
                    x[i] = bootles - 1 - i;
                }
            }
            Console.WriteLine("We need more water!");
            Console.WriteLine("Bottles left: {0}", bootles);
            Console.WriteLine("With indexes: {0}", string.Join(", ", x));
            Console.WriteLine("We need {0} more liters!", notEnoughtCapacity);

        }
    }
}