正好这个题没题解，发一下。
这里的“难以通过”是在一个加强版上。
QOJ.ac
QOJ
As we are currently experiencing an overwhelming number of web requests for fetching user submissions, we have temporarily disabled the full submissions list. You must now be logged in to view submissions.
Discussion #477 for Problem #6350. MIT
Type: Editorial
Status: Open
Posted by: ppip
Posted at: 2025-12-28 20:45:33
Last updated: 2025-12-30 07:16:20
New Editorial for Problem #6350
Comments
Qingyu
ni hao li hai
- 2025-12-30 07:16:20