#include <bits/stdc++.h>

using namespace std;

#define ll unsigned long long

ifstream f("inversmodular.in");
ofstream g("inversmodular.out");

ll exp_log(ll n,ll e,ll mod)
{
    ll sol=1;
    while (e!=0)
    {
        if (e%2==1) sol=sol*n%mod;
        n=n*n%mod;
        e/=2;
    }
    return sol%mod;
}

int main()
{
    ll a,n;
    f>>a>>n;
    g<<exp_log(a,n-2,n);
    return 0;
}