def mat_mul_mod(a, b, MOD):
    """行列の掛け算 % MOD"""
    I, J, K = len(a), len(b[0]), len(b)
    c = [[0] * J for _ in range(I)]
    for i in range(I) :
        for j in range(J) :
            for k in range(K) :
                c[i][j] += a[i][k] * b[k][j]
            c[i][j] %= MOD
    return c

def mat_pow(x, n, MOD):
    """行列累乗 % MOD"""
    y = [[0] * len(x) for _ in range(len(x))]
    for i in range(len(x)):
        y[i][i] = 1
    while n > 0:
        if n & 1:
            y = mat_mul_mod(x, y, MOD)
        x = mat_mul_mod(x, x, MOD)
        n >>= 1
    return y

N, M = map(int, input().split())
X = [[1, 1], [1, 0]]
f1, f2 = 0, 1
F = [[f2], [f1]]
Y = mat_pow(X, N - 2, M)
Z = mat_mul_mod(Y, F, M)
print(Z[0][0])