#include <fstream>
#include <iostream>

using namespace std;

typedef long long ll;

ll a, n, ans = 1;

int main() {
    ifstream cin("inversmodular.in");
    ofstream cout("inversmodular.out");

    cin >> a >> n;
    ll phi = n - 1;
    ll put = phi - 1;
    while (put > 0) {
        if (put % 2 == 1) {
            ans = (ans * a) % n;
        }
        a = (a * a) % n;
        put /= 2;
    }

    cout << ans;

    return 0;
}