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In mathematics, the four color theorem, or the four color map theorem, states that, given any separation of a plane into contiguous regions, producing 阅读全文
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A robot has been programmed to follow the instructions in its path. Instructions for the next direction the robot is to move are laid down in a grid. 阅读全文
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Background The knight is getting bored of seeing the same black and white squares again and again and has decided to make a journey around the world. 阅读全文
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Pass a year learning in Hangzhou, yifenfei arrival hometown Ningbo at finally. Leave Ningbo one year, yifenfei have many people to meet. Especially a 阅读全文
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输入一行数字，如果我们把这行数字中的‘5’都看成空格，那么就得到一行用空格分割的若干非负整数（可能有些整数以‘0’开头，这些头部的‘0’应该被忽略掉，除非这个整数就是由若干个‘0’组成的，这时这个整数就是0）。 你的任务是：对这些分割得到的整数，依从小到大的顺序排序输出。 Input输入包含多组测试 阅读全文
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You are trapped in a 3D dungeon and need to find the quickest way out! The dungeon is composed of unit cubes which may or may not be filled with rock. 阅读全文
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A university network is composed of N computers. System administrators gathered information on the traffic between nodes, and carefully divided the ne 阅读全文
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I’m out of stories. For years I’ve been writing stories, some rather silly, just to make simple problems look difficult and complex problems look easy 阅读全文
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Holedox is a small animal which can be considered as one point. It lives in a straight pipe whose length is L. Holedox can only move along the pipe. C 阅读全文
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lice and Bob love playing one-dimensional battle ships. They play on the field in the form of a line consisting of n square cells (that is, on a 1 × n 阅读全文