#define _CRT_SECURE_NO_WARNINGS
#include <iostream>
#include <cmath>
#include <string>
#include <vector>
#include <algorithm>
#include <queue>
#include <map>
#include <functional>
#include <set>
#include <numeric>
#include <stack>
#include <utility>
#include <time.h>
//#include "util.h"

using namespace std;
typedef long long lint;
typedef unsigned long long ull;
typedef pair<lint, lint> Pii;

#define PI 3.14159265358979323846
#define EPS 1e-6
#define MOD ((lint)1000000007)
#define MIN(a,b) ((a)<(b)?(a):(b))
#define MAX(a,b) ((a)>(b)?(a):(b))
#define CHAR_BIT 8

template <typename _Ty>
ostream& operator << (ostream& ostr, const vector<_Ty>& v) {
	if (v.empty()) {
		cout << "{ }";
		return ostr;
	}
	cout << "{" << v.front();
	for (auto itr = ++v.begin(); itr != v.end(); itr++) {
		cout << ", " << *itr;
	}
	cout << "}";
	return ostr;
}

class Mat2D {
private:
	lint a, b;
	lint c, d;
public:
	Mat2D() {
		a = d = 1;
		b = c = 0;
	}
	Mat2D(lint a, lint b, lint c, lint d) {
		this->a = a; this->b = b; this->c = c; this->d = d;
	}
	Mat2D(lint E) {
		a = E; b = 0; c = 0; d = E;
	}
	Mat2D operator* (Mat2D& obj) {
		return Mat2D(
			a * obj.a + b * obj.c,
			a * obj.b + b * obj.d,
			c * obj.a + d * obj.c,
			c * obj.b + d * obj.d
		);
	}
	Mat2D& operator*= (Mat2D& obj) {
		return (*this = *this * obj);
	}
	Mat2D operator% (lint m) {
		return Mat2D(a % m, b % m, c % m, d % m);
	}
	Mat2D& operator%= (lint m) {
		return (*this = *this % m);
	}
	lint getA() { return a; }
	lint getB() { return b; }
	lint getC() { return c; }
	lint getD() { return d; }
};

template <typename Ty>
Ty bigExp(Ty n, lint p, lint m)
{
	if (p == 0)
		return Ty(1);
	Ty ret;
	ret = bigExp(n, p / 2, m);
	ret *= ret;
	ret %= m;
	if (p % 2)
		return ret * n % m;
	else
		return ret;
}

int main()
{
	//clock_t start, end;
	//start = clock();

	lint N, M;
	cin >> N >> M;

	Mat2D F = Mat2D(0, 1, 1, 1);
	cout << bigExp(F, N - 1, M).getB() << endl;

	//end = clock();
	//printf("%d msec.\n", end - start);

	return 0;
}