Efficiency

Level 5 of the Dungeon
(0, 0, D:5)
  a +0 robe
(0, 1, D:5)
  24 stones
(0, 2, D:5)
  30 arrows
(1, 0, D:5)
  12 gold pieces
(1, 1, D:5)
  13 gold pieces
(2, 0, D:5)
  a +0 scale mail
(8, -6, D:5)
  9 gold pieces
(9, 5, D:5)
  23 stones
(11, -5, D:5)
  a jackal corpse
(18, -8, D:5)
  a book of Necromancy

Level 6 of the Dungeon
(0, 0, D:6)
  10 gold pieces
(36, 24, D:6)
  10 gold pieces
(43, 20, D:6)
  14 gold pieces
(43, 36, D:6)
  a +0 robe
(43, 40, D:6)
  a +0 robe