```while(~(n-1))```会死循环吧
by bovine__kebi @ 2021-08-28 14:20:52
@[bovine__kebi](/user/294736) 改来改去改了几遍循环条件才A（大雾
by luqyou @ 2021-08-28 20:50:08
@[bovine__kebi](/user/294736) 谢谢大佬
by luqyou @ 2021-08-28 20:50:41