#include <fstream>
#include <queue>
#include <iostream>
#include <bitset>
using namespace std;

ifstream fin("inversmodular.in");
ofstream fout("inversmodular.out");

int lgput(int a, int b, int mod)
{
    int p = 1;
    while (b)
    {
        if (b % 2 == 1)
            p = p * a % mod;
        a = a * a % mod;
        b /= 2;
    }
    return p;
}
int main()
{
    int a, b;
    fin >> a >> b;
    fout << lgput(a, b - 2, b);
    return 0;
}