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【题目】: Roundgod draws a grid graph of size nn with n \times nn×n cells. She can use one of kk colors to color every edge once, but lzr gives her some l 阅读全文
posted @ 2020-07-29 14:10
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题目链接:http://acm.hdu.edu.cn/showproblem.php?pid=6799 题目大意: 给你一个由左右括号和乘法符号组成的字符串 ()* ,可以将*变成左括号或、右括号、空字符,求能生成的最短的合法括号序列 中字典序最小的。(左括号字典序小于右括号) 合法括号序列举例: 阅读全文
posted @ 2020-07-29 13:19
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