import sys
sys.setrecursionlimit(10**8)


def mat_dot_mod(mat1, mat2, mod):
    if len(set(map(len, mat1))) != 1 or len(set(map(len, mat2))) != 1:
        raise ValueError("wrong matrix")
    if len(mat1[0]) != len(mat2):
        raise ValueError("matrix size dose not match")
    return [[sum(v1 * v2 for v1, v2 in zip(r1, r2)) % mod for r2 in zip(*mat2)]
            for r1 in mat1]

def mat_pow_mod(mat,p,mod):
    c = mat 
    len_mat = len(mat)
    ans = [[1 if i == j else 0 for j in range(len(mat))]for i in range(len(mat))]
    for i in range(len(bin(p))-2):
        if 1 << i & p:
            ans = mat_dot_mod(ans,c,mod)
        c = mat_dot_mod(c,c,mod) 
    return ans


N, M = map(int, input().split())

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

mt = mat_pow_mod(mat,N-2, M)

print(mt[0][0]*1 + mt[0][1]*0)