Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a +0 dagger (still there?)
  a kobold corpse (skeletalised by now) (still there?)
(3, -4, D:1)
  17 stones
(8, 13, D:1)
  13 stones

Level 2 of the Dungeon
(0, 0, D:2)
  a +0 spear
(19, 13, D:2)
  a rat corpse (skeletalised by now)

Level 3 of the Dungeon
(0, 0, D:3)
  24 stones
(4, 6, D:3)
  a book of Minor Magic
(5, -7, D:3)
  a +0 mace
(9, -4, D:3)
  a jackal corpse
(9, 1, D:3)
  8 gold pieces
(12, -6, D:3)
  a +2 short sword of speed
(14, 29, D:3)
  23 stones
(15, 0, D:3)
  a +0 club
  an orc corpse
(15, 9, D:3)
  a rat corpse

Level 4 of the Dungeon
(0, 0, D:4)
  a +0 ring mail
(2, 12, D:4)
  a hobgoblin corpse
(4, 13, D:4)
  a scroll of identify
(4, 14, D:4)
  16 stones