#include <iostream>
#include <cstdio>
#include <cstring>
using namespace std;
typedef long long LL;

struct Matrix{
    LL mat[4][4];
}answer;

void show(Matrix a)
{
    for (int i = 1; i <= 3; ++i)
    {
        for (int j = 1; j <= 3; ++j)
            cout << a.mat[i][j] << " ";
        cout << endl;
    }
}

Matrix Multiple(Matrix a, Matrix b, int c)
{
    Matrix res;
    memset(res.mat, 0, sizeof(res.mat));
    for (int i = 1; i <= 3; ++i)
    {
        for (int j = 1; j <= 3; ++j)
        {
            for (int k = 1; k <= 3; ++k)
            {
                LL tmp = a.mat[i][k] * b.mat[k][j] % c;
                res.mat[i][j] = (res.mat[i][j] + tmp) % c;
            }
        }
    }
    return res;
}

Matrix expMod(Matrix a, int b, int c)
{
    Matrix res;
    memset(res.mat, 0, sizeof(res.mat));
    res.mat[1][1] = res.mat[2][2] = res.mat[3][3] = 1;
    while (b)
    {
        if (b & 1)
            res = Multiple(res, a, c);
        a = Multiple(a, a, c);
        b >>= 1;
    }
    return res;
}

int main()
{
    int n, m;
    scanf("%d %d", &n, &m);
    answer.mat[1][2] = answer.mat[1][3] = 1;
    answer.mat[2][1] = answer.mat[2][2] = answer.mat[2][3] = 1;
    answer.mat[3][3] = 1;
//  show(answer);
//  show(Multiple(answer, answer, 1000));
    answer = expMod(answer, n-2, m);
    LL ans = 0;
    for (int i = 1; i <= 2; ++i)
        ans = (ans + answer.mat[i][3]) % m;
    ans = (ans + answer.mat[3][3]*2%m) % m;
    printf("%lld", ans);
//  show(answer);
    return 0;
}