十年OI一场空 , _____________
by Somecat_W @ 2023-08-18 14:58:00
[提交记录](https://www.luogu.com.cn/record/121579964)
by Somecat_W @ 2023-08-18 14:58:31
@[yuziyang](/user/719289) 不开longlong见祖宗
by Hilte @ 2023-08-18 15:27:06
@[Somecat_W](/user/532940) @[Hilte](/user/420950) 谢谢你们！！！
by Didncan_yu @ 2023-08-18 16:37:18