#include <bits/stdc++.h>
#define ll long long
using namespace std;
ll fi(int nr)
{
    int var=nr;
    for(int i=2; i*i<=nr; ++i)
    {
        if(nr%i==0)
        {
            while(nr%i==0)
            {
                nr=nr/i;
            }
        }
    }
}
ll exp_log(ll a, ll e,ll mod)
{
    ll rez=1;
    while(e!=0)
    {
        if(e%2==1)
        {
            rez=rez*a%mod;
        }
        a=a*a;
        e=e/2;
    }
    return rez;
}

int main()
{
    ifstream f("inversmodular.in");
    ofstream g("inversmodular.out");
    int a,n;
    f>>a>>n;
    g<<exp_log(a,n-2,n);

    return 0;
}