摘要:
题目连接http://acm.hdu.edu.cn/showproblem.php?pid=5444Elven PostmanDescriptionElves are very peculiar creatures. As we all know, they can live for a very ... 阅读全文
摘要:
题目连接http://acm.hdu.edu.cn/showproblem.php?pid=5443The Water ProblemDescriptionIn Land waterless, water is a very limited resource. People always fight... 阅读全文