#include <fstream>
#define ll long long
using namespace std;
ifstream f("inversmodular.in");
ofstream g("inversmodular.out");
ll a,n;
ll putere(ll x,ll y)
{
    ll s;
    if(!y)return 1;
    if(y==1)return x%n;
    s=putere(x,y/2);
    if(y%2==0)return (s*s)%n;
    else return (s*s*x)%n;
}
int main()
{
    f>>a>>n;
    g<<putere(a,n-2)%n;
    return 0;
}