package InstructionSet;

import java.util.Scanner;

public class InstructionSet_Broken {

    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String opCode = input.nextLine();
        String[] codeArgs = opCode.split("\\s+");
        long result = 0;
        while (!opCode.equals("END")) {

            switch (codeArgs[0]) {
                case "INC": {
                    long operandOne=Long.parseLong(codeArgs[1]);
                    result = ++operandOne;
                    opCode="END";
                    break;
                }
                case "DEC": {
                    long operandOne=Long.parseLong(codeArgs[1]);
                    result = --operandOne;
                    opCode="END";
                    break;
                }
                case "ADD": {
                    long operandOne=Long.parseLong(codeArgs[1]);
                    long operandTwo=Long.parseLong(codeArgs[2]);
                    result = operandOne + operandTwo;
                    opCode="END";
                    break;
                }
                case "MLA": {
                    long operandOne=Long.parseLong(codeArgs[1]);
                    long operandTwo=Long.parseLong(codeArgs[2]);
                    result = (long)operandOne * (long)operandTwo;
                    opCode="END";
                    break;
                }
            default:
                break;

            }

            System.out.println(result);
            System.out.println("");
            opCode = input.nextLine();
            codeArgs = opCode.split("\\s+");
            result = 0;
        }

    }
}