随笔分类 - 数学题
摘要:7720: RGB Coloring 题目描述 Takahashi has a tower which is divided into N layers. Initially, all the layers are uncolored. Takahashi is going to paint som
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摘要:We have a sandglass consisting of two bulbs, bulb A and bulb B. These bulbs contain some amount of sand. When we put the sandglass, either bulb A or B
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