Efficiency

Level 1 of the Dungeon
(0, 0, D:1)
  a potion of curing
(6, 16, D:1)
  a +0 scale mail
(10, 8, D:1)
  a giant cockroach corpse

Level 3 of the Dungeon
(0, 0, D:3)
  an uncursed staff of fire
(2, -2, D:3)
  6 gold pieces
(4, -1, D:3)
  14 stones
(13, 36, D:3)
  a +0 hand axe (still there?)
  an adder corpse (still there?)
(13, 38, D:3)
  a +0 dagger (still there?)
  a cursed +0 leather armour (still there?)
(14, 40, D:3)
  a +0 club
  a jackal corpse
  a jackal corpse
(19, 34, D:3)
  a +0 hunting sling
(19, 35, D:3)
  a +0 club
  a goblin corpse
(19, 36, D:3)
  a +0 leather armour
  an orc corpse
(24, 23, D:3)
  a +0 ring mail

Level 4 of the Dungeon
(0, 0, D:4)
  6 gold pieces