#include <fstream>

using namespace std;
long long mod,a,n;

long long putere(long long a, long long n)
{
    if(n==0)
        return 1;
    int x=putere(a,n/2);
    if(n%2==0)
        return (x*x)%mod;
    return (((x*x)%mod)*a)%mod;
}

ifstream fin("inversmodular.in");
ofstream fout("inversmodular.out");

int main()
{
    fin>>a>>n;
    mod=n;
    fout<<putere(a,n-2)%n;
    return 0;
}