#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
ifstream in("inversmodular.in");
ofstream out("inversmodular.out");

ll exp_log(ll x, ll n)
{
    if(n == 0) return 1;
    if(n%2 == 0) return exp_log(x*x, n/2);
    return x*exp_log(x*x, n/2);
}

int main()
{
    ll a, n;
    cin >> a >> n;
    cout << exp_log(a, n-2)%n;


    return 0;
}