Solution -「ABC 313F」Flip Machines
date: '2023-10-12'title: 'Solution -「ABC 313F」Flip Machines'Desc.Link.有 $N$ 张卡片,第 $i$ 张卡片正面印着一个数 ...
In mathematics you don't understand things, you just get used to them.
In mathematics you don't understand things, you just get used to them.