#include <bits/stdc++.h>
using namespace std;
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;
using tll = tuple<ll, ll, ll>;
using mat = tuple<ll, ll, ll, ll>;

ll N, M;
vector<mat> ma;

mat calc_mat(mat a, mat b) {
  mat n;
  auto& [n00, n01, n10, n11] = n;
  auto [a00, a01, a10, a11] = a;
  auto [b00, b01, b10, b11] = b;
  n00 = ((a00 * b00) % M + (a01 * b10) % M) % M;
  n01 = ((a00 * b10) % M + (a01 * b11) % M) % M;
  n10 = ((a10 * b00) % M + (a11 * b10) % M) % M;
  n11 = ((a10 * b10) % M + (a11 * b11) % M) % M;
  return n;
}

mat pow_mat(mat a, ll n, ll m) {
  mat ret = {1, 0, 0, 1};
  while (n) {
    if (n & 1) ret = calc_mat(ret, a);
    a = calc_mat(a, a);
    n >>= 1;
  }
  return ret;
}

int main() {
  cin >> N >> M;
  mat ans = pow_mat(mat(1, 1, 1, 0), N - 1, M);
  cout << get<2>(ans) << endl;
  return 0;
}