M and C
On the left bank of a river, there are 3 missionaries and 3 cannibals. The goal is to safely get the 6 people to the other side under the following constraints: They have a row-boat which holds up to 2 occupants. At no time can there be more cannibals than missionaries, or lunch will be served. Problem: Defining a crossing as a traverse across the river one way, how many c crossings will be required?
The answer is 11.
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