def multiply(a, b, mod):
    return [
        [
            (a[0][0] * b[0][0] + a[0][1] * b[1][0]) % mod,
            (a[0][0] * b[0][1] + a[0][1] * b[1][1]) % mod
        ],
        [
            (a[1][0] * b[0][0] + a[1][1] * b[1][0]) % mod,
            (a[1][0] * b[0][1] + a[1][1] * b[1][1]) % mod
        ]
    ]

def matrix_power(matrix, power, mod):
    result = [[1, 0], [0, 1]]  # Identity matrix
    while power > 0:
        if power % 2 == 1:
            result = multiply(result, matrix, mod)
        matrix = multiply(matrix, matrix, mod)
        power //= 2
    return result

def fib(n, mod):
    if n == 0:
        return 0
    base_matrix = [[1, 1], [1, 0]]
    result_matrix = matrix_power(base_matrix, n - 1, mod)
    return result_matrix[0][0]

n, m = map(int, input().split())
print(fib(n, m) % m)