import functools
import numpy as np
n,m= map(int,input().split())
@functools.lru_cache(maxsize = None)

def func(p):
    if p==1 : return np.mod(arr,m)
    if p%2==1:
        return np.mod(func(p-1)*arr,m)
    else:
        return np.mod(func(p//2)*func(p//2),m)

arr = np.mat([[0,1],[1,1]])
bb = np.mat([0,1])*func(n-1)
print(bb.item((0,0)))