#define rep(i, n) for (int i = 0; i < (int)(n); i++)
#define ALL(v) v.begin(), v.end()
typedef long long ll;

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

ll MOD;

//m次正方行列の積
vector<vector<ll>> matrixmul(ll m,vector<vector<ll>> a,vector<vector<ll>> b){
  vector<vector<ll>> c(m,vector<ll>(m,0));
  rep(i,m){
    rep(j,m){
      rep(k,m) c[i][j]=(c[i][j]+a[i][k]*b[k][j]%MOD)%MOD;
    }
  }
  return c;
}

//m次正方行列vecのn乗
vector<vector<ll>> matrixpow(ll m,vector<vector<ll>> vec,ll n){
  vector<vector<ll>> ans(m,vector<ll>(m,0));
  rep(i,m) ans[i][i]=1;
  while(n){
    if(n&1) ans=matrixmul(m,ans,vec);
    vec=matrixmul(m,vec,vec);
    n>>=1;
  }
  return ans;
}

int main(){
  ll n;
  cin>>n>>MOD;
  
  vector<vector<ll>> A(2,vector<ll>(2));
  A[0][0]=1,A[0][1]=1,A[1][0]=1;
  cout<<matrixpow(2,A,n-1)[1][0]<<endl;

  return 0;
}