#include <bits/stdc++.h>
#include <atcoder/all>
using namespace std;
using namespace atcoder;
istream &operator>>(istream &is, modint &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint &a) { return os << a.val(); }
istream &operator>>(istream &is, modint998244353 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint998244353 &a) { return os << a.val(); }
istream &operator>>(istream &is, modint1000000007 &a) { long long v; is >> v; a = v; return is; }
ostream &operator<<(ostream &os, const modint1000000007 &a) { return os << a.val(); } 

typedef long long ll;
typedef vector<vector<int>> Graph;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
#define rep(i,n) for (int i = 0;i < (int)(n); i++)
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define my_sort(x) sort(x.begin(), x.end())
#define my_max(x) *max_element(all(x))
#define my_min(x) *min_element(all(x))
#define cout_vector(x) rep(i,x.size()) cout << x[i] << ' ';
template<class T> inline bool chmax(T& a, T b) { if (a < b) { a = b; return 1; } return 0; }
template<class T> inline bool chmin(T& a, T b) { if (a > b) { a = b; return 1; } return 0; }
const int INF = (1<<30) - 1;
const ll LINF = (1LL<<62) - 1;
const int MOD = 998244353;
const int MOD2 = 1e9+7;
const double PI = acos(-1);
vector<int> di = {1,0,-1,0};
vector<int> dj = {0,1,0,-1};

using mint = modint;

using mat = vector<vector<mint>>;

mat mat_mul(mat &A, mat &B) {
    mat C(A.size(), vector<mint>(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] += A[i][k] * B[k][j];
            }
        }
    }
    return C;
}

mat mat_pow(mat &A, ll k) {
    mat res(A.size(), vector<mint>(A.size()));
    for (int i = 0; i < res.size(); i++) {
        res[i][i] = 1;
    }
    while (k > 0) {
        if (k & 1) res = mat_mul(res, A);
        A = mat_mul(A, A);
        k >>= 1;
    }
    return res;
}

int main(){
    cin.tie(0);
    ios_base::sync_with_stdio(false);
    int N,M; cin >> N >> M;
    modint :: set_mod(M);
    mat A(2,vector<mint>(2));
    A[0][0] = 1;
    A[0][1] = 1;
    A[1][0] = 1;
    A[1][1] = 0;
    A = mat_pow(A,N-1);
    cout << A[1][0] << endl;
}