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[null,"LightsOut",null,null,null,null,"初期状態",null,null,null,null,null,null,null,null,null,null,null,null,null,null,3,null,null,null,null,null,null,null,null,1]
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[null," すべての色を消すことができるか",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,1]
[null,null,null,null,null,null,"解答"]
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["逆行列を左から掛ける"]
[]
["分母",7,null,"mod2では分母は１と同じだから関係ない。",null,null,null,null,null,null,null,null,null,"→","Mod2で。これが解答"]
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