# yukicoder My Practice
# author: Leonardone @ NEETSDKASU

require 'matrix'

N, M = gets.strip.split.map &:to_i

mat = Matrix[[1, 1], [1, 0]]

def hoge(a, n)
    if n == 1
        a
    elsif n.even?
        hoge((a*a).map{|x|x%M},n/2)
    else
        (hoge((a*a).map{|x|x%M},n/2)*a).map{|x|x%M}
    end
end

p hoge(mat,N)[1,1]%M