#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using V1 = vector<ll>;
using V2 = vector<V1>;

V2 multiple(ll M, V2 &a, V2 &b)
{
    V2 c(2, V1(2, 0));
    for (int i = 0; i < 2; ++i) { 
        for (int j = 0; j < 2; ++j) {
            for (int k = 0; k < 2; ++k) {
                c[i][j] += a[i][k] * b[k][j];
                c[i][j] %= M;
            }

        }
    }
    return c;
}

int main()
{
    int N;
    ll M;
    cin >> N >> M;
    N -= 2;
    V2 a(2, V1(2, 0));
    a[0][0] = a[0][1] = a[1][0] = 1;
    V2 b(2, V1(2, 0));
    b[0][0] = b[1][1] = 1;
    for ( ; N > 0; N >>= 1) {
        if (N & 1)
            b = multiple(M, a, b);
        a = multiple(M, a, a);
    }
    cout << b[0][0] << endl;
}