[提交链接](https://www.luogu.com.cn/record/87104310) 调一天了，求大佬指点QWQ
by AH20 @ 2022-09-21 15:34:15
sum是不是有可能爆int
by BouncyHunter @ 2022-09-21 15:39:47
@[BouncyHunter](/user/253704) 这道题内存好极限，我开成long long就MLE了
by AH20 @ 2022-09-21 15:45:19