#include <bits/stdc++.h>
#define rep(i,n) for (int i = 0; i < (n); i ++)
using namespace std;
typedef long long ll;
typedef pair<ll,ll> PL;
typedef pair<int,int> P;
const int INF = 1e9;
const ll MOD = 1e9 + 7;
const double eps = 1e-6;

int main() {
    ll N,M; cin >> N >> M;
    ll x = 0,y = 1;
    rep(i,N - 2){
        x = (x + y)%M;
        swap(x,y);
    }
    cout << y << endl;
}