IOI 2020 Day 1 Discussion
Difference between en1 and en2, changed 5 character(s)
If it is permitted to discuss problems now, how to solve A? I think B and C are more or less straightforward.

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en3 English Azret 2020-09-16 22:04:50 292
en2 English Azret 2020-09-16 20:55:43 5
en1 English Azret 2020-09-16 20:51:45 129 Initial revision (published)