import sys
import numpy as np
stdin=sys.stdin

ip=lambda: int(sp())
fp=lambda: float(sp())
lp=lambda:list(map(int,stdin.readline().split()))
sp=lambda:stdin.readline().rstrip()
Yp=lambda:print('Yes')
Np=lambda:print('No')

N, M = lp()

A = []
basic = np.array([[0, 1],[1, 1]],dtype=int)
A.append(basic)
for i in range(40):
    now = A[-1]
    nex = np.dot(now,now)
    A.append(nex)
st  = 39
gyouretu = np.eye(2,dtype=int)
N -= 2
while N:
    if 2**st > N:
        st -= 1
        continue
    else:
        N -= 2**st
        gyouretu = np.dot(gyouretu, A[st])
        gyouretu %= M
        st -= 1

ans = np.dot(gyouretu, np.array([0, 1]))
ans %= M

print(ans[1])