How many men does the cyclops kill and eat

Odysseus lost six men from the crew of each ship to the Ciconians at Ismarus; they were attacked at night by the survivors of the town they'd sacked. He then lost six men total when they were eaten for meals, two at a time, by the Cyclops, Polyphemus

The Cyclops, also quick on his feet, bends down, grabs two men, and promptly eats them. Odysseus draws his sword to kill the Cyclops in his sleep, but he stops when he realizes that they can never escape the cave without the strength of the Cyclops to remove the gigantic rock at the entrance. Foiled again.