Solution
以前看到过,但是一直没有做
标签:CF1349F1,matrix,Slime,Version,Easy,Sequences From: https://www.cnblogs.com/Dark-Romance/p/16864163.html
以前看到过,但是一直没有做
标签:CF1349F1,matrix,Slime,Version,Easy,Sequences From: https://www.cnblogs.com/Dark-Romance/p/16864163.html