import java.util.ArrayList;
import java.util.List;
import java.util.function.BiFunction;

/**
 * @author /u/Philboyd_Studge on 12/22/2015.
 */
public class Advent22 {

    static List<Instruction> program = new ArrayList<>();

    static int index;

    enum CMD {
        hlf((x, y) -> x / 2),
        tpl((x, y) -> x * 3),
        inc((x, y) -> x + 1),
        jmp(Advent22::jump),
        jie(Advent22::jumpIfEven),
        jio(Advent22::jumpIfOne);
        private final BiFunction<Integer, Integer, Integer> func;

        private CMD(BiFunction<Integer, Integer, Integer> func) {
            this.func = func;
        }
    }

    public static int jump(int offset, int value) {
        return index + offset;
    }

    public static int jumpIfEven(int offset, int value) {
        return isEven(value) ? index + offset : index + 1;
    }

    public static int jumpIfOne(int offset, int value) {
        return value==1 ? index + offset : index + 1;
    }

    public static boolean isEven(int val) {
        return val % 2 == 0;
    }

    static class Instruction {
        CMD command;
        Register register;
        int offset;

        public Instruction(CMD command, Register register, int offset) {
            this.command = command;
            this.register = register;
            this.offset = offset;
        }

        public void execute() {
            if (command.ordinal() < 3) {
                register.value = command.func.apply(register.value, 0);
                index++;
            } else {
                index = command.func.apply(offset, register.value);
            }
        }
    }

    static class Register {
        int value = 0;
    }

    public static void run() {
        while (true) {
            Instruction instr = program.get(index);
            instr.execute();
            if (index >= program.size()) break;
        }
    }

    public static void main(String[] args) {
        List<String[]> input = FileIO.getFileLinesSplit("advent22.txt", "[ ,]+");

        Register a = new Register();
        Register b = new Register();

        for (String[] each : input) {
            program.add(new Instruction(CMD.valueOf(each[0]),
                    each[1].equals("a") ? a : each[1].equals("b") ? b : a,
                    each.length==2 && (each[1].startsWith("+") || each[1].startsWith("-"))
                            ? Integer.parseInt(each[1]) : each.length==3
                            ? Integer.parseInt(each[2]) : 0));
        }

        run();

        System.out.println(b.value);

    }
}