#include <stdio.h>

using namespace std;

long long A, M;

long long expLog_modM(int base, int pow) {
    if (pow == 0) return 1;

    long long mid = expLog_modM(base, pow >> 1);
    long long mid2 = (mid * mid) % M;

    if (pow&1) return (base * mid2) % M;
    return mid2 % M;
}

int main()
{
    freopen("inversmodular.in", "r", stdin);
    freopen("inversmodular.out", "w", stdout);

    scanf("%lld %lld", &A, &M);
    printf("%lld\n", expLog_modM(A, M-2));

    return 0;
}