Squirrel Liss love nuts there n tree number 1 n west east street delicious nut tree the height tree hi Liss want eat nutsnow Liss root tree number 1 in second Liss perform follow action Walk unit tree eat nut current tree jump tree in action height Liss do not change more formally Liss height h tree 1in1 jump height h tree i1 this action can not perform hhi1 Compute minimal time second require eat nut