#include <bits/stdc++.h>
#define rep(i, n) for (int i = 0; i < (n); ++i)
#define sz(x) int(x.size())
using namespace std;
typedef long long ll;
typedef pair<int, int> P;
typedef vector<int> vec;
typedef vector<vec> mat;

const ll INF = 1LL << 60;
// const int M = 10000;

ll n, M;

// A * B
mat mul(mat &A, mat &B) {
    mat C(A.size(), vec(B[0].size()));

    for (int i = 0; i < A.size(); i++) {
        for (int k = 0; k < B.size(); k++) {
            for (int j = 0; j < B[0].size(); j++) {
                C[i][j] = (C[i][j] + A[i][k] * B[k][j]) % M;
                // cout << i << " " << k << " " << j <<endl;
            }
        }
    }

    return C;
}

mat pow(mat A, ll n) {
    mat B(A.size(), vec(A.size()));
    for (int i = 0; i < A.size(); i++) {
        B[i][i] = 1;
    }

    while (n > 0) {
        if (n & 1) B = mul(B, A);
        A = mul(A, A);
        n >>= 1;
    }
    return B;
}

int main() {
    cin >> n >> M;
    mat A(2, vec(2));
    A[0][0] = 1;
    A[0][1] = 1;
    A[1][0] = 1;
    A[1][1] = 0;

    // A = mul(A, A);
    A = pow(A, n - 1);
    cout << A[1][0] << endl;
    // rep(i, 2) {
    //     rep(j, 2) {
    //         cout << A[i][j] << " ";
    //     }
    //     cout << endl;
    // }
}