#include <fstream>

using namespace std;
ifstream fin("inversmodular.in");
ofstream fout("inversmodular.out");
int n;
long long lg_pow(int x, int putere)
{
    if(putere==1)
    {
        return x;
    }
    if(putere%2==0)
    {
        long long p=lg_pow(x,putere/2);
        return p%n*p%n;
    }
    else
    {
        long long p=lg_pow(x,putere/2);
        return x*p%n*p%n;
    }
}
int main()
{
    int a;
    fin>>a>>n;
    fout<<lg_pow(a,n-2)%n;
    return 0;
}