#include <fstream>
#include <cstring>
#include <algorithm>
using namespace std;

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

long long a, n;

long long rid(long long x, long long y) {

    long long r = 1;
    for (long long i = 0; 1ll * (1 << i) <= y; ++i) {
        if ((1 << i) & y) {
            r *= x;
            r %= n;
        }
        x *= x;
        x %= n;
    }
    return r;

}

int main() {

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

    fout.close();
    return 0;
}