Question 2
A beaver lives in a small pond, surrounded by forests and rocky regions. The symbols are pond, forest and rock, respectively.
Each day it cuts all forests adjacent to the current pond and turns those regions into pond. Rocky regions cannot be converted.
After how many days will all forests on the map have been cut?
Each day it cuts all forests adjacent to the current pond and turns those regions into pond. Rocky regions cannot be converted.
After how many days will all forests on the map have been cut?