Description: Gallery by the world famous painting of m* n rectangular array arranged in the composition of the showroom. In order to prevent the paintings were stolen, need to set up showroom robot sentry guards. In addition to monitoring the security of each robot in the showroom it also can monitor it in the showroom and the adjacent upper and lower, left and right four showrooms. Try to design a robot sentry security arrangements of the algorithm, making each painting a showroom gallery in the security surveillance robots, and all at least a few of the security robot.
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