def mul(A, B):
    if len(A[0]) != len(B):
        return -1

    R = len(A)
    C = len(B[0])
    K = len(B)

    res = [[0]*C for _ in range(R)]
    for i in range(R):
        for j in range(C):
            for k in range(K):
                res[i][j] += A[i][k] * B[k][j]
                res[i][j] %= MOD #MODはグローバルにある
    return res


def power(A, x):
    if x == 0:
        N = len(A)
        res = [[0]*N for _ in range(N)]
        for i in range(N):
            res[i][i] = 1
        return res

    B = power(A, x//2)
    res = mul(B, B)
    if x % 2 == 1:
        res = mul(res, A)
    return res


N, MOD = map(int, input().split())
F = [[1, 1],
     [1, 0]]

A = [[1],
     [0]]

F = power(F, N-2)
A = mul(F, A)

print(A[0][0])