insts = []
with open("i23.txt", "r") as f:
    for line in f:
        args = line.strip().replace(",", "").split()
        insts.append(args)

part_2 = True
i = 0
regs = {"a": 0, "b": 0}
if part_2:
    regs["a"] = 1

while i < len(insts):
    inst = insts[i]
    match inst:
        case ["inc", reg]:
            regs[reg] += 1
        case ["hlf", reg]:
            regs[reg] //= 2
        case ["tpl", reg]:
            regs[reg] *= 3
        case ["jio", reg, offset]:
            if regs[reg] == 1:
                i += int(offset)
                continue
        case ["jie", reg, offset]:
            offset = int(offset)
            if regs[reg] % 2 == 0:
                i += int(offset)
                continue
        case ["jmp", offset]:
            i += int(offset)
            continue
        case _:
            print(inst)
            assert False
    i += 1

print(regs["b"])