#include <cstdio>

using namespace std;

int a, n, sol;

int pow (int x, int y)
{
    if (y==1) return x % n;
    else if (y%2==0) return pow (x*x, y/2) % n;
    else return x * pow (x*x, y/2) % n;
}

int main()
{
    freopen ("inversmodular.in", "r", stdin);
    freopen ("inversmodular.out", "w", stdout);
    scanf ("%d%d", &a, &n);
    sol=pow (a, n-2)%n;
    printf ("%d", sol);
}