Help with a problem

Правка en1, от frank1369blogger, 2020-10-04 10:29:43

Hello codeforces! Can someone give me the solution for this problem please.

История

 
 
 
 
Правки
 
 
  Rev. Язык Кто Когда Δ Комментарий
en1 Английский frank1369blogger 2020-10-04 10:29:43 181 Initial revision (published)