#pragma region Macros

#include <bits/extc++.h>
using namespace std;
using namespace __gnu_pbds;
// using namespace __gnu_cxx;

#define TO_STRING(var) # var
#define pb emplace_back
#define int ll
#define endl '\n'

using ll = long long;
using ld = long double;
const ld PI = acos(-1);
const ld EPS = 1e-10;
const int INF = 1 << 30;
const ll INFL = 1LL << 62;
// const int MOD = 998244353;
const int MOD = 1000000007;

int ceil(int x, int y) {return (x > 0 ? (x + y - 1) / y : x / y);}
int POW(int x, int y) {
    if (y != (int)(y) or y < 0 or x != 0 && x != 1 && y > 64) {cout << "Error" << endl;return 0;}
    if (y == 0) return 1;
    if (y % 2 == 0) return POW(x * x, y / 2);
    return x * POW(x, y - 1);
}

__attribute__((constructor))
void constructor() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    cout << fixed << setprecision(15);
}

#pragma endregion

struct Matrix{
    long long p[2][2] = {{0, 0}, {0, 0}};
};

Matrix Multiplication(Matrix A, Matrix B){
    Matrix C;
    for(int i = 0; i < 2; i++){
        for(int j = 0; j < 2; j++){
            for(int k = 0; k < 2; k++){
                C.p[i][k] += A.p[i][j] * B.p[j][k];
                C.p[i][k] %= 1000000000;
            }
        }
    }
    return C;
}

Matrix Power(Matrix A, long long n){
    Matrix P = A, Q; bool flag = false;
    for(int i = 0; i < 60; i++){
        if((n & (1LL << i)) != 0LL){
            if(flag == false){
                Q = P;
                flag = true;
            }
            else{
                Q = Multiplication(Q, P);
            }
        }
        P = Multiplication(P, P);
    }
    return Q;
}

signed main(){
    long long N, M;
    cin >> N >> M;

    Matrix A;
    A.p[0][0] = 1;
    A.p[0][1] = 1;
    A.p[1][0] = 1;
    Matrix B = Power(A, N - 2);

    cout << (B.p[1][0] + B.p[1][1]) % M << endl;
}