#include "bits/stdc++.h"
using namespace std;
using ll = long long;
using P = pair<ll, ll>;
const ll INF = (1LL << 61);
typedef vector<ll> vec;
typedef vector<vec> mat;
ll N, M;
mat mul(mat &A, mat &B) {
	mat C(A.size(), vec(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]) % M;
			}
		}
	}
	return C;
}
mat pow(mat A) {
	mat B(A.size(), vec(A.size()));
	for (int i = 0; i < A.size(); i++) {
		B[i][i] = 1;
	}
	while (N > 0) {
		if (N & 1)B = mul(B, A);
		A = mul(A, A);
		N >>= 1;
	}
	return B;
}

signed main() {
	cin >> N >> M; N--;
	mat A(2, vec(2));
	A[0][0] = 1; A[0][1] = 1;
	A[1][0] = 1; A[1][1] = 0;
	A = pow(A);
	cout << A[1][0] << endl;
}