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

Discussion of Problem 1133. Fibonacci Sequence

Hint: AC in Python 2.7
Posted by SRC 29 Jul 2015 15:41
The fastest way is to use matrix exponentiation and it is quite simple to understand. The algorithm is O(log n), yes it is that fast!. I got AC with Python 2.7 with 0.046s. Python has an added advantage for this problem since its Integer type can be as big as the RAM of the device being used. With c++ you can still get answers fast, using matrix exponentiation, but the answers are not precise enough, and leads to WA.

Edited by author 29.07.2015 15:42