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):
            res[i][j] = sum(A[i][k]*B[k][j] for k in range(K))
            res[i][j] %= M
    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, M = map(int, input().split())
if N == 1:
    ans = 0
elif N == 2:
    ans = 1
else:
    A = [[1, 1],
         [1, 0]]
    A = power(A, N-2)
    ans = A[0][0]

print(ans)