#include "bits/stdc++.h"
using namespace std;
using lint = long long;
typedef vector<vector<lint> > mat;

mat mul(mat &a, mat&b, lint MOD){
	mat c(a.size(), vector<lint> (b[0].size()));
	for(int i = 0; i < a.size(); i++){
		for(int k = 0; k < b.size(); k++){
			for(int j = 0; j < b[0].size(); j++){
				c[i][j] = (c[i][j] + a[i][k] * b[k][j]) % MOD;
			}
		}
	}
	return c;
}
mat pow_matrix(mat &a, lint N, lint MOD){
	mat b(a.size(), vector<lint> (a.size()));
	for(int i = 0; i < a.size(); i++) b[i][i] = 1;
	while(N > 0){
		if(N & 1) b = mul(b, a, MOD);
		a = mul(a, a, MOD);
		N >>= 1;
	}
	return b;
}

signed main(){
	lint N, MOD; cin >> N >> MOD;
	mat a(2, vector<lint> (2));
	a[0][0] = 1; a[0][1] = 1;
	a[1][0] = 1; a[1][1] = 0;
	a = pow_matrix(a, N - 1, MOD);
	cout << a[1][0] << endl;
}