#include <iostream>
#include <vector>
#include <set>
#include <queue>
#include <stack>
#include <math.h>
#include <cassert>
#include <bitset>
#include <map>
#include <algorithm>
#include <iterator>
#include <string>
#include <utility>
#include <numeric>
#include <regex>
#include <complex>
#include <atcoder/all>
using namespace atcoder;
using namespace std;
using ll=long long;
using ull=unsigned long long;
using P=pair<ll,ll>;
template<typename T>using minque=priority_queue<T,vector<T>,greater<T>>;
template<typename T>bool chmax(T &a,const T &b){return (a<b?(a=b,true):false);}
template<typename T>bool chmin(T &a,const T &b){return (a>b?(a=b,true):false);}
template<typename T1,typename T2>
ostream &operator<<(ostream &os,const pair<T1,T2>&p){
  os<<p.first<<" "<<p.second;
  return os;
}
template<typename T1,typename T2>
istream &operator>>(istream &is,pair<T1,T2>&p){
  is>>p.first>>p.second;
  return is;
}
template<typename T>
istream &operator>>(istream &is,vector<T> &a){
  for(auto &i:a)is>>i;
  return is;
}
#define reps(i,a,n) for(int i=(a);i<(n);i++)
#define rep(i,n) reps(i,0,n)
#define all(x) x.begin(),x.end()
ll myceil(ll a,ll b){return (a+b-1)/b;}
template<class T>
struct Matrix{
  vector<vector<T>>A;
  Matrix(int h,int w):A(h,vector<T>(w,0)){}
  Matrix(int n):A(n,vector<T>(n,0)){}
  size_t height()const{return A.size();}
  size_t width()const{return A[0].size();}
  const vector<T> &operator[](int k)const{return (A.at(k));}
  vector<T> &operator[](int k){return (A.at(k));}
  Matrix I(size_t n){
    Matrix m(n);
    rep(i,n)m[i][i]=1;
    return m;
  }
  Matrix &operator+=(const Matrix &B){
    size_t h=height(),w=width();
    assert(h==B.height());
    assert(w==B.width());
    rep(i,h)rep(j,w)(*this)[i][j]+=B[i][j];
    return *this;
  }
  Matrix &operator-=(const Matrix &B){
    size_t h=height(),w=width();
    assert(h==B.height());
    assert(w==B.width());
    rep(i,h)rep(j,w)(*this)[i][j]-=B[i][j];
    return *this;
  }
  Matrix &operator*=(const Matrix &B){
    size_t h=height(),w=B.width(),p=width();
    assert(B.height()==p);
    vector<vector<T>>C(h,vector<T>(w,0));
    rep(i,h)rep(j,w)rep(k,p)C[i][j]=(C[i][j]+(*this)[i][k]*B[k][j]);
    A.swap(C);
    return *this;
  }
  Matrix &operator^=(ll k){
    assert(height()==width());
    assert(k>=0);
    Matrix B=I(height());
    while(k){
      if(k&1)B*=*this;
      *this *= *this;
      k>>=1ll;
    }
    A.swap(B.A);
    return *this;
  }
  Matrix operator+(const Matrix &B)const{
    return (Matrix(*this)+=B);
  }
  Matrix operator-(const Matrix &B)const{
    return (Matrix(*this)-=B);
  }
  Matrix operator*(const Matrix &B)const{
    return (Matrix(*this)*=B);
  }
  Matrix operator^(const ll k)const{
    return (Matrix(*this)^=k);
  }
};
int main(){
  int n,m;
  cin>>n>>m;
  modint::set_mod(m);
  Matrix<modint>mat(2);
  mat[0][0]=mat[0][1]=mat[1][0]=1;
  cout<<(mat^(n-1))[1][0].val()<<endl;
}