#include <bits/stdc++.h>
using namespace std;
using i32 = int;
using i64 = long long;

vector<vector<i64>> mul(vector<vector<i64>>& as, vector<vector<i64>>& bs, i32 m) {
    assert(as[0].size() == bs.size());
    vector res(as.size(), vector(bs[0].size(), 0LL));
    for (size_t i = 0 ; i < as.size() ; i++) {
        for (size_t j = 0 ; j < bs[0].size() ; j++) {
            for (size_t k = 0 ; k < as[0].size() ; k++) {
                res[i][j] = (res[i][j] + as[i][k] * bs[k][j]) % m;
            }
        }
    }
    return res;
}

int main() {
    i32 n; cin >> n;
    i32 m; cin >> m;
    n--;
    const i32 lg = 32;
    vector dob(lg, vector(2, vector(2, 0LL)));
    dob[0] = { { 1LL, 1LL }, { 1LL, 0LL } };
    for (i32 i = 0 ; i + 1 < lg ; i++) {
        dob[i + 1] = mul(dob[i], dob[i], m);
    }
    vector<vector<i64>> ans = { { 1LL, 0LL }, { 0LL, 1LL } };
    for (i32 i = 0 ; i < lg ; i++) {
        if (n & (1 << i)) {
            ans = mul(ans, dob[i], m);
        }
    }
    cout << ans[1][0] << endl;
}