Ralph go collect mushroom Mushroom Forest there m direct path connect n tree Mushroom Forest on path grow mushroom when Ralph pass path collect mushroom path the Mushroom Forest magical fertile ground mushroom grow fantastic speed new mushroom regrow soon Ralph finish mushroom collection path more specifically Ralph pass path ith time regrow mushroom pass that initially x mushroom path Ralph collect x mushroom time x1 mushroom second time x12 mushroom time however number mushroom 0for example let 9 mushroom path initially the number mushroom collect path 9 8 6 3 Ralph pass fourth time from fifth time later Ralph can not collect mushroom path pass itRalph decide start tree s how mushroom collect describe path