#include <bits/stdc++.h>
#define rep(i,n) for(int i=0; i<n; ++i)
using namespace std;
using std::abs;
using P = pair<long long, long long>;
typedef long long ll;
const ll INF = 100000000000000000LL;

int main(void) {
  int N, M;
  cin >> N >> M;
  int pre, prepre;
  rep(i, N) {
    if(i == 0) prepre = 0;
    else if(i == 1) pre = 1;
    else {
      int tmp = (prepre + pre) % M;
      prepre = pre;
      pre = tmp;
    }
  }
  cout << pre << endl;
}