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I thought about it for 5 minutes and couldn't find an answer (I found several, but they were all half-answers). I looked at the answer below, and it turned out

I thought about it for 5 minutes and couldn't find an answer (I found several, but they were all half-answers). I looked at the answer below, and it turned out that you'd missed an important part: The prisoners don't die immediately after drinking from a poisoned barrel... They die after 30 days (in other words, they can drink from several barrels, and if any of those barrels were poisoned, they'd die). But thanks anyway.

web_chops 15y ago
Ya, that's correct :) It doesn't make much sense otherwise I guess...
samlittlewood 15y ago
Or your allow a cocktail to be made from the contents of several barrels.
sbov 15y ago
You also need to specify that you need to know by 30 days. Without both restrictions a simple binary search works.
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