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Andy, 8, has a dream - he wants to produce his very own dictionary. This is not an easy task for him, as the number of words that he knows is, well, n 阅读全文
摘要：
我们的化学生物学家发明了一种新的叫stripies非常神奇的生命。该stripies是透明的无定形变形虫似的生物，生活在果冻状的营养培养基平板菌落。大部分的时间stripies在移动。当他们两个碰撞，会有新stripie生成，而旧的不见了。经过长期研究，他们发现新stripies的体重不等于消失的s 阅读全文
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Barney lives in NYC. NYC has infinite number of intersections numbered with positive integers starting from 1. There exists a bidirectional road betwe 阅读全文
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You’re typing a long text with a broken keyboard. Well it’s not so badly broken. The only problem with the keyboard is that sometimes the “home” key o 阅读全文