wc，我是nc ```cpp s1=max(a[1]-Div((k-sum[n-b]+sum[1]),(b+1ll)),0ll); ``` 改一下就 AC 了 by Isshiki·Iroha @ 2021-12-28 01:29:03
今晚……？ 昨晚……？ by _Imaginary_ @ 2021-12-28 06:51:16