请仔细看数据范围,最大数据正好超过ull范围,但是自然溢出会变为0,特判即可
by TinyMirror1 @ 2020-10-22 19:49:36
@[Tiny_Mirror](/user/249422) 谢谢,我傻掉了(
by Dian_Jiao @ 2020-10-22 20:00:46
想当年我这道题因为unsigned忘记怎么打了
手打高精emmm
by L_sdcs @ 2020-10-22 20:04:36