#include <iostream>
#include <fstream>

using namespace std;

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

long long expow(long long b, long long m, long long mod)
{
    long long put=1;
    while(m!=1){
        if(m%2==0)
        {
            m=m/2;
            b=b*b%mod;
        }else{
            m=m-1;
            put=put*b%mod;
        }
    }
    b=b*put%mod;
    return b%mod;
}

long long a,n;

int main()
{
    in>>a>>n;
    out<<expow(a,n-2,n);
    return 0;
}