Question: Consider a system in which computer games can be played by students only between 10 P.M. and 6 A.M., by faculty members between 5 P.M.

Consider a system in which “computer games” can be played by students only between 10 P.M. and 6 A.M., by faculty members between 5 P.M. and 8 A.M., and by the computer center staff at all times, suggest a scheme for implementing this policy efficiently.

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