Hourglass

テーマ: Science: Physics: Hourglasses
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ID :3917
作者 :koko
日付 :07/04/09
点数 :0
人気度 :31.49%
Solvers :22295
平均時間 :00:00:10
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規模 :(1+1)x(1+1)x2
色 :
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