nim_组合数学

DescriptionNimisa2-playergamefeaturingseveralpilesofstones.Playersalternateturns,andonhis/herturn,aplayer’smoveconsistsofremovingoneormorestonesfromanysinglepile.Playendswhenallthestoneshavebeenremoved,atwhichpointthelastplayertohavemovedisdeclaredthewinner.GivenapositioninNi