_02_InstructionSet

package Java_Lab_23_01;

import java.util.Scanner;

public class _02_InstructionSet {
    public static void main(String[] args) {
        Scanner input = new Scanner(System.in);
        String opCode = input.nextLine();

        while (!opCode.equals("END")) {
            String[] codeArgs = opCode.split(" ");

            long result = 0;
            switch (codeArgs[0]) {
            case "INC": {
                //
                int operandOne = Integer.parseInt(codeArgs[1]) + 1;
                result = operandOne;
                break;
            }
            case "DEC": {
                //
                int operandOne = Integer.parseInt(codeArgs[1]) - 1;
                result = operandOne;
                break;
            }
            case "ADD": {
                int operandOne = Integer.parseInt(codeArgs[1]);
                int operandTwo = Integer.parseInt(codeArgs[2]);
                result = operandOne + operandTwo;
                break;
            }
            case "MLA": {
                int operandOne = Integer.parseInt(codeArgs[1]);
                int operandTwo = Integer.parseInt(codeArgs[2]);
                //
                result = (long)operandOne * (long)operandTwo;
                break;
            }
            default:
                break;
            }
            //
            opCode = input.nextLine();
            System.out.println(result);
        }
    }
}