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DescriptionFlip game is played on a rectangular 4x4 field with two-sided pieces placed on each of its 16 squares. One side of each piece is white and ... 阅读全文
posted @ 2015-09-15 20:24
UniqueColor
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DescriptionSquares and rectangles fascinated the famous Dutch painter Piet Mondriaan. One night, after producing the drawings in his 'toilet series' (... 阅读全文
posted @ 2015-09-15 15:44
UniqueColor
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Recently, researchers on Mars have discovered N powerful atoms. All of them are different. These atoms have some properties. When two of these atoms c... 阅读全文
posted @ 2015-09-15 13:46
UniqueColor
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Description两只青蛙在网上相识了,它们聊得很开心,于是觉得很有必要见一面。它们很高兴地发现它们住在同一条纬度线上,于是它们约定各自朝西跳,直到碰面为止。可是它们出发之前忘记了一件很重要的事情,既没有问清楚对方的特征,也没有约定见面的具体位置。不过青蛙们都是很乐观的,它们觉得只要一直朝着某个... 阅读全文
posted @ 2015-09-15 13:13
UniqueColor
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