自己暖自己
by Lit_ @ 2019-11-21 20:08:20
@[叶夕水](/user/231942) 可以用位移
by Sya_Resory @ 2019-11-21 20:11:53
把`pow(2,n)`改成`1<<(n)`
by Sya_Resory @ 2019-11-21 20:12:19
额 不行啊
by Lit_ @ 2019-11-21 20:28:43
没人看qaq
by Lit_ @ 2019-11-21 21:19:13