这题是不是有多个解呀？
by fulikai20050531 @ 2016-11-20 16:44:46
赞成，管理员来说一下把！
by 徐卓然666 @ 2017-05-14 10:14:12
SPJ去哪了。。
by s_h_y @ 2017-05-16 17:54:26
没问题吧 2^n是边长 面积是4^n
by zhzhwz @ 2017-07-08 15:33:04
@[s_h_y](/user/8073) 同问
by oimaster @ 2020-02-29 18:27:37
SPJ呢
by CSP_juruo @ 2022-08-17 10:29:05