import numpy as np
N, M = map(int, input().split())

def fibmtx2n(k):
  fm = np.array([[1,1],[1,0]], dtype='object')
  for i in range(k): 
    fm = np.dot(fm,fm) % M
  return fm

def fibmtx(n):
  fm1 = np.array([[1,0],[0,1]],dtype='object')
  while n > 0:
    l2n = n.bit_length()-1
    fm1 = np.dot(fm1, fibmtx2n(l2n)) % M
    n -= 2**l2n
  return fm1[0][1]

print(fibmtx(N-1))