#include <fstream>

using namespace std;
ifstream in("inversmodular.in");
ofstream out("inversmodular.out");
int main()
{
    int n,i,p=1,a;
    in>>n>>a;
    for(i=1;i<=a-2;i++)
        p=(p*n)%a;
    out<<p;
    return 0;
}