using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace BankAccount
{
    class Program
    {
        static void Main(string[] args)
        {

            int transactionCount = int.Parse(Console.ReadLine());

            int counter = 1;
            double totalAmount = 0.0;



            while (counter <= transactionCount)

            {
                double transactionAmount = double.Parse(Console.ReadLine());

                if (transactionAmount < 0)
                {
                    Console.WriteLine("Invalid operation!");
                    break;
                }

                Console.WriteLine($"Increase: {transactionAmount:f2}");
                totalAmount += transactionAmount;
                counter++;
            }
            Console.WriteLine($"Total: {totalAmount:f2}");



        }
    }
}