Explain this problem

Revision en1, by naevis, 2019-04-09 11:00:34

Can someone explain for me this problem? https://codeforces.com/contest/681/problem/D

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en1 English naevis 2019-04-09 11:00:34 105 Initial revision (published)