#include <fstream>
#include <cstring>
#include <algorithm>
#define ll long long
using namespace std;

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

ll a, n;

ll exp(ll x, ll y) {

    ll r = 1;
    for (ll i = 1; i <= y; i <<= 1) {
        if (i & y) {
            r *= x;
            r %= n;
        }
        x *= x;
        x %= n;
    }

    return r;
}

int main() {

    fin >> a >> n;
    fout << exp(a, n - 2);

    fout.close();
    return 0;
}