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

#define ll long long
#define forin(in ,n) for(ll i=0; i<n; i++) cin>>in[i]
#define forout(out) for(ll i=0; i<(ll)out.size(); i++) cout<<out[i]<<endl
#define rep(i, n) for (ll i = 0; i < n; ++i)
#define rep_up(i, a, n) for (ll i = a; i < n; ++i)
#define rep_down(i, a, n) for (ll i = a; i >= n; --i)
#define P pair<ll, ll>

#define all(v) v.begin(), v.end()
#define fi first
#define se second
#define vvvll vector<vector<vector<ll>>>
#define vvll vector<vector<ll>>
#define vll vector<ll>
#define pqll priority_queue<ll>
#define pqllg priority_queue<ll, vector<ll>, greater<ll>>

constexpr ll INF = (1ll << 60);
constexpr ll mod = 1000000007;
//constexpr ll mod = 998244353;
constexpr double pi = 3.14159265358979323846;
template <typename T>
inline bool chmax(T &a, T b) {
    if (a < b) {
        a = b;
        return 1;
    }
    return 0;
}
template <typename T>
inline bool chmin(T &a, T b) {
    if (a > b) {
        a = b;
        return 1;
    }
    return 0;
}
template <typename T>
void pt(T val) {
    cout << val << "\n";
}
template <typename T>
void pt_vll(vector<T> &v) {
    ll vs = v.size();
    rep(i, vs) {
        cout << v[i];

        if (i == vs - 1)
            cout << "\n";
        else
            cout << " ";
    }
}
ll mypow(ll a, ll n) {
    ll ret = 1;
    if(n==0) return 1;
    if(a==0) return 0;
    rep(i, n) {
        if (ret > (ll)(1e18 + 10) / a) return -1;
        ret *= a;
    }
    return ret;
}
long long modpow(long long a, long long n, long long mod) {
    long long res = 1;
    while (n > 0) {
        if (n & 1) res = res * a % mod;
        a = a * a % mod;
        n >>= 1;
    }
    return res;
}
long long modinv(long long a, long long m) {
    long long b = m, u = 1, v = 0;
    while (b) {
        long long t = a / b;
        a -= t * b; swap(a, b);
        u -= t * v; swap(u, v);
    }
    u %= m;
    if (u < 0) u += m;
    return u;
}
vvll mul(vvll A, vvll B,ll m) {
    vvll res(A.size(), vll(B.size(), 0));
    rep(i, A.size()) rep(k, B.size()) rep(j, B[0].size()) {
        res[i][j] += (A[i][k] * B[k][j])%m;
        res[i][j]%=m;
    }
    return res;
}
 
vvll matpow(vvll A, ll n , ll m) {
    if (n==1) return A;
    if (n&1) return mul(matpow(A, n-1,m), A,m);
    vvll tmp = matpow(A, n/2,m);
    return mul(tmp, tmp ,m);
}
int main() {
    ll n,m,k,ans=0;
    cin>>n>>m;
    k=2;
    vvll p(k,vll(1));
    vvll a(k,vll(k));
    a[0][0]=1;
    a[1][0]=1;
    a[0][1]=1;
    p[0][0]=1;
    a=matpow(a,n-2,m);
    p=mul(a,p,m);
    ans=p[0][0];
    cout<<ans<<endl;
}