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The shortest common superstring of 2 strings S 1 and S 2 is a string S with the minimum number of characters which contains both S 1 and S 2 as a sequ 阅读全文
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目前看来,简单深搜题大致分为三类题型: 1是连通块问题,求连通块大小和数量。 2是棋盘问题,问地图内放几个坐标,有几个放法。 3是输出路径问题。 1.这个问题的经典例题是计算水塘(pku-2386 lake counting) 例题: Due to recent rains, water has p 阅读全文
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If you ever tried to read a html document on a Macintosh, you know how hard it is if no Netscape is installed. Now, who can forget to install a HTML b 阅读全文
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Sudoku is a very simple task. A square table with 9 rows and 9 columns is divided to 9 smaller squares 3x3 as shown on the Figure. In some of the cell 阅读全文