#include<iostream>
#include<vector>
using namespace std;

vector<vector<long>> matmul(vector<vector<long>> mat1, vector<vector<long>> mat2,int mod){
        vector res(mat1.size(), vector<long>(mat1.size(), 0));
        for(int i = 0; i < 2; i++){
                for(int j = 0; j < 2; j++){
                        for(int k = 0; k < 2; k++){
                                res[i][j] = res[i][j] + mat1[i][k]*mat2[k][j];
                        }
                        res[i][j] %= mod;
                }
        }
        return res;
}

vector<vector<long>> matpow(vector<vector<long>> mat, int n, int mod){
        vector res(mat.size(), vector<long>(mat.size(), 0));
        for(int i = 0; i < mat.size(); i++){
                res[i][i] = 1;
        }
        for(int i = 0; i < 30; i++){
                if(n & (1<<i)){
                        res = matmul(mat, res, mod);
                }
                mat = matmul(mat, mat, mod);
        }
        return res;
}

int main(){
        int n,m;
        cin >> n >> m;
        vector<vector<long>> mat = {{0,1}, {1,1}};
        vector<vector<long>> mat2 = matpow(mat, n-2, m);
        cout << mat2[1][1] << endl;
}