Set

using System;

namespace ExamPreparation
{
    class Startup
    {
        static void Main(string[] args)
        {
            string input = Console.ReadLine();
            long result = 0;

            while (input != "END")
            {
                string[] tokens = input.Split(new[] { ' ' }, StringSplitOptions.RemoveEmptyEntries);

                switch (tokens[0])
                {
                    case "INC":
                        long incOperand = long.Parse(tokens[1]);
                        result = ++incOperand;
                        break;
                    case "DEC":
                        long decOperand = long.Parse(tokens[1]);
                        result = --decOperand;
                        break;
                    case "ADD":
                        long first = long.Parse(tokens[1]);
                        long second = long.Parse(tokens[2]);
                        result = (first + second);
                        break;
                    case "MLA":
                        long firstNum = long.Parse(tokens[1]);
                        long secondNum = long.Parse(tokens[2]);
                        result = (firstNum * secondNum);
                        break;
                }

                Console.WriteLine(result);
                input = Console.ReadLine();
            }
        }
    }
}