ENG  RUSTimus Online Judge
Online Judge
Problems
Authors
Online contests
About Online Judge
Frequently asked questions
Site news
Webboard
Links
Problem set
Submit solution
Judge status
Guide
Register
Update your info
Authors ranklist
Current contest
Scheduled contests
Past contests
Rules
back to board

Discussion of Problem 1673. Admission to Exam

If you are dumb like me and getting WA3
Posted by Md sabbir Rahman 14 Apr 2020 11:42
phi(n) is not equal to number of coprime less than n, IT IS THE NUMBER OF COPRIMES LESS THAN OR EQUAL TO N. the formula of phi(n) work for all except a special number.