此程序是用元胞自动机仿真模拟森林发生火灾时的情况。有3种状态的元胞，分别为空位、正在燃烧的树木、未燃烧的树木。(This program is based on cellular automata to simulate forest fires. There are 3 states of cell, which are vacant, burning trees and unburned trees.)