#include <stdio.h>
#define LL long long

using namespace std;

int A, M;

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

    int mid = expLog_modM(base, pow >> 1);

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

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

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

    LL put = M-2;
	LL nr = A;
	LL crt = 1;
    for(LL p = 1;p <= put;p <<= 1)
    {
	 	if (p & put) crt = (crt * nr) % M;
	  	nr = (nr * nr) % M;
	}
	printf("%lld\n",crt);

    return 0;
}