287 B
287 B
计蒜客信息学 2 月编程新手赛
https://www.jisuanke.com/contest/34366/problems
计蒜客信息学 2 月普及组模拟赛
https://www.jisuanke.com/contest/34367/problems
https://www.jisuanke.com/contest/34366/problems
https://www.jisuanke.com/contest/34367/problems