import Data.Int
import Data.Array

main = do
  [n,m] <- map read . words <$> getLine :: IO [Int64]
  print $ fibonacci (n-1) m

{-- Fibonacci数の一般項 --}
fibonacci 0 _ = 0
fibonacci 1 _ = 1
fibonacci n p = let [x,_,_,_] = matpow [1,1,1,0] (n-1) in x `mod` p
  where
    matprod [a,b,c,d] [w,x,y,z] = map (`mod` p) [a*w+b*y,a*x+b*z,c*w+d*y,c*x+d*z]
    matpow a 0 = [1,0,0,1]
    matpow a 1 = a
    matpow a p = let t = matpow a (div p 2) in (if even p then id else (`matprod` a)) (t `matprod` t)