#include <bits/stdc++.h>
using namespace std;

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int N, M;
    cin >> N >> M;
    using ll = long long;
    using vll = vector<ll>;
    using vvll = vector<vll>;
    #define rep(i, n) for (int i = 0; i < n; i++)
    vvll m = {{0, 1}, {1, 1}};
    vvll e = {{1, 0}, {0, 1}};
    auto mul = [&](vvll a, vvll b) {
        vvll ret(2, vll(2));
        rep(i, 2) rep(j, 2) rep(k, 2) ret[i][j] = (ret[i][j] + a[i][k] * b[k][j] % M) % M;
        return ret;
    };
    auto POW = [&](auto POW, const vvll &a, ll b) {
        if (b == 0) {
            return e;
        }
        vvll ret = POW(POW, a, b / 2);
        ret = mul(ret, ret);
        if (b & 1) {
            ret = mul(ret, a);
        }
        return ret;
    };
    auto mul2 = [&](vvll a, vll b) {
        vll ret(2);
        rep(i, 2) rep(j, 2) ret[i] = (ret[i] + a[i][j] * b[j] % M) % M;
        return ret;
    };
    cout << mul2(POW(POW, m, N - 2), {0, 1})[1] << '\n';
    return 0;
}