#include <iostream>
#include <fstream>
#define ll unsigned long long

using namespace std;

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

ll MOD,A;

ll putere(ll x, ll n)
{
    ll a;
    if (n==0) return 1;
    if (n==1) return x;
    a = putere(x, n/2);
    if (n%2==0)return (a*a)%MOD;
    else return (x*a*a)%MOD;
}

int main()
{
    f>>A>>MOD;
    g<<putere(A, MOD-2)%MOD;
    return 0;
}