def contestant_pick_again_swap(adjusted_stage, contestant_first_pick):
    """Contestant swaps choices with the remaining door."""
    if contestant_first_pick == 0:
        if adjusted_stage[1] == -1:
            return 2
        else:
            return 1
    elif contestant_first_pick == 1:
        if adjusted_stage[0] == -1:
            return 2
        else:
            return 0
    else:
        if adjusted_stage[0] == -1:
            return 1
        else:
            return 0