@[skydogli](/space/show?uid=7480) 这题，如果不加一些优化的话是会爆 `long long`的 QWQ
by 龙之吻—水货 @ 2019-05-06 11:55:29
@[龙之吻—水货](/space/show?uid=49866) 哇,感谢!我试试
by skydogli @ 2019-05-06 12:55:08
@[龙之吻—水货](/space/show?uid=49866) A了,谢谢巨佬出手相助!
by skydogli @ 2019-05-06 13:16:06
喵呜~
by 龙之吻—水货 @ 2019-05-06 13:34:17