摘要：
Slastyona and her loyal dog Pushok are playing a meaningless game that is indeed very interesting. The game consists of multiple rounds. Its rules are 阅读全文
摘要：
本题中，我们将用符号[c]表示对c向下取整，例如：[3.0」= [3.1」=[3.9」=3。蛐蛐国最近蚯蚓成灾了！隔壁跳 蚤国的跳蚤也拿蚯蚓们没办法，蛐蛐国王只好去请神刀手来帮他们消灭蚯蚓。蛐蛐国里现在共有n只蚯蚓（n为正整 数)。每只蚯蚓拥有长度，我们设第i只蚯蚓的长度为a_i(i=1,2,... 阅读全文