#define _GLIBCXX_DEBUG // test only

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

int main() {

  ios::sync_with_stdio(false);
  cin.tie(0);
  int n;
  long long m;
  cin >> n >> m;
  vector<vector<long long>> mat(2,vector<long long>(2,1));
  mat[0][1] = 0;
  mat[1][0] = 0;
  vector<vector<long long>> ks(2,vector<long long>(2,1));
  ks[1][1] = 0;
  int left = n-2;
  while (left > 0) {
    if (left%2 == 1) {
      vector<vector<long long>> nmat(2,vector<long long>(2,0));
      for (int i=0;i<2;i++) {
        for (int j=0;j<2;j++) {
          for (int k=0;k<2;k++) {
            nmat[i][j] += mat[i][k]*ks[k][j];
            nmat[i][j] %= m;
          }
        }
      }
      mat = nmat;
    }
    left /= 2;
    vector<vector<long long>> nks(2,vector<long long>(2,0));
    for (int i=0;i<2;i++) {
      for (int j=0;j<2;j++) {
        for (int k=0;k<2;k++) {
          nks[i][j] += ks[i][k]*ks[k][j];
          nks[i][j] %= m;
        }
      }
    }
    ks = nks;
  }
  cout << mat[0][0] << endl;
}