SomeCommands

import java.util.Scanner;

public class newins {
	
	public static void main(String[] args) {
			Scanner input = new Scanner(System.in);
			String opCode = input.nextLine();
			String[] codeArgs = opCode.split(" "); 
			
            while (!opCode.equals("END")){// the while loop must be here, after we have our array, so it can check if there is "END"
        	long result=0;
        	    switch (codeArgs[0]) {
                case "INC": {
                    long operandOne = Integer.parseInt(codeArgs[1]); //here I changed the type from int to long because it's possible the result be upper than maxvalue of int
                	result = operandOne+1; // I have remove the operator ++, because it gave new value after itself, that's why in broken program the result was wrong (it was printing the value before ++)
                	break;
                }
                case "DEC": {
                    long operandOne = Integer.parseInt(codeArgs[1]); //here I changed the type from int to long because it's possible the result be upper than maxvalue of int
                    result = operandOne-1; // here changes are at the same reason like with ++ case in upper command.
                    break;
                }
                case "ADD": {
                    long operandOne  = Integer.parseInt(codeArgs[1]); //here I changed the type from int to long because it's possible the result be upper than maxvalue of int
                    long operandTwo = Integer.parseInt(codeArgs[2]);
                    result = operandOne + operandTwo;
                    break;
                }
                case "MLA": {
                    long operandOne  = Integer.parseInt(codeArgs[1]); //here I changed the type from int to long because it's possible the result be upper than maxvalue of int
                    long operandTwo = Integer.parseInt(codeArgs[2]);
                    result = (operandOne * operandTwo); // here we don't need type casting because result and operands are of the same type (long). I have change type of the all operands.
                    break;}
                default:{
                    break;
                    }
                }
        	    System.out.println(result); 
        	    opCode = input.nextLine(); // Those TWO rows I make here, because we have to get another command like new input
                codeArgs = opCode.split(" "); // ^here^
            }  
            input.close(); // if the input is "END" we are out of the while loop, and we get here, where the input gets closed.
     } 
}