Heidi get tired decipher prophecy hide Tree Life decide headquarters rest little try of course uproot tree draw Tree piece paper on second thought identical drawing n total n number vertex Tree Life know happenindee way Heidi ambush group zombie while manage fend damage drawing peculiar way ith copy vertex number remove adjacent edge in picture zombie erase vertex number relabele remain n1 vertex arbitrarily number 1 n fortunately vertex distinct number what s drawing arbitrarily shuffledreorderedNow Heidi want recover Tree Life description drawing list edge