**What is knapsack on tree? Where can I learn it?**
Difference between en1 and en2, changed 7 character(s)
I found that technique in my country's OI last year but i can't fouind it on the internet.↵
Is there a blog write about this topic, please suggest me!

History

 
 
 
 
Revisions
 
 
  Rev. Lang. By When Δ Comment
en3 English tht2005 2021-10-01 15:53:15 6 Tiny change: 'e suggest me!' -> 'e suggest it to me!'
en2 English tht2005 2021-06-05 11:08:09 7 Tiny change: ' i can't found it on t' -> ' i can't find it on t'
en1 English tht2005 2021-06-05 11:01:23 200 Initial revision (published)