2020年4月15日

Red and Black
摘要： 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
posted @ 2020-04-15 19:22 Jain_Shaw 阅读(142) 评论(0) 推荐(0) 编辑

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