You are at the door, slightly turn right exit the room and move forward, walk straight till you find an open door at the right side, move towards the open door, turn around diagonally you can find a closed doors in front, walk straight towards the closed doors, turn left move forward, you can find number of closed doors at the right side, walk straight there is a closed door in front with stairs A  and there is a wall at the left side and right side, the position now you are standing is your destination.