using System;
using System.Collections.Generic;
using System.Linq;
class Program
{
    static void Main()
    {
        decimal totalWater = decimal.Parse(Console.ReadLine());
        decimal[] bottlesArray = Console.ReadLine().Split(' ').Select(decimal.Parse).ToArray();
        decimal bottlesCapacity = decimal.Parse(Console.ReadLine());

        decimal consumedWater = 0;
        decimal bottlesFilled = 0;
        decimal bottlesLeft = 0;

        decimal allBottles = bottlesArray.Length;

        List<decimal> indexes = new List<decimal>();

        if (totalWater % 2 == 0)
        {
            for (int i = 0; i < allBottles; i++)
            {
                consumedWater += bottlesCapacity - bottlesArray[i];
                if (consumedWater <= totalWater)
                    bottlesFilled++;
                else
                    indexes.Add(i);
            }
        }
        else
        {
            for (decimal i = allBottles - 1; i >= 0; i--)
            {
                consumedWater += bottlesCapacity - bottlesArray[(int)i];
                if (consumedWater <= totalWater)
                    bottlesFilled++;
                else
                    indexes.Add(i);
            }
        }
        if (consumedWater <= totalWater)
        {
            Console.WriteLine("Enough water!");
            Console.WriteLine("Water left: {0}l.", totalWater - consumedWater);
        }
        if (consumedWater > totalWater)
        {
            Console.WriteLine("We need more water!");
            Console.WriteLine("Bottles left: {0}", allBottles - bottlesFilled);
            Console.WriteLine("With indexes: {0}", string.Join(", ", indexes));
            Console.WriteLine("We need {0} more liters!", consumedWater - totalWater);
        }
    }
}