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Description The cows play the child's game of hopscotch in a non-traditional way. Instead of a linear set of numbered boxes into which to hop, the cow 阅读全文
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Description FJ and his cows enjoy playing a mental game. They write down the numbers from 1 to N (1 <= N <= 10) in a certain order and then sum adjace 阅读全文
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Description Given a number of distinct decimal digits, you can form one integer by choosing a non-empty subset of these digits and writing them in som 阅读全文
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There is a rectangular room, covered with square tiles. Each tile is colored either red or black. A man is standing on a black tile. From a tile, he c 阅读全文
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There are n employees in Alternative Cake Manufacturing (ACM). They are now voting on some very important question and the leading world media are try 阅读全文