N, M = map(int, input().split())
N -= 1
MOD = M

def calc_matrix_product(A, B):
    if not len(A[0]) == len(B):
        raise Exception("Invalid arguments. A_col: {} B_row: {}".format(len(A), len(B)))

    C = [[0] * len(B[0]) for _ in range(len(A))]
    for i in range(len(A)):
        for j in range(len(B)):
            for k in range(len(B[0])):
                C[i][j] = (C[i][j] + A[i][k] * B[k][j]) % MOD

    return C


def calc_matrix_pow(A, n):
    if not len(A) == len(A[0]):
        raise Exception("Invalid arguments. A_row: {} A_col: {}".format(len(A), len(A[0])))

    B = [[0] * len(A) for _ in range(len(A))]
    for i in range(len(A)):
        B[i][i] = 1

    while n:
        if n & 1:
            B = calc_matrix_product(B, A)
        A = calc_matrix_product(A, A)
        n = n >> 1

    return B


A = [[1, 1], [1, 0]]
print(calc_matrix_pow(A, N)[1][0] % MOD)