#include <fstream>

using namespace std;
int n, p, i, im, b;
int main()
{
    ifstream fin("inversmodular.in");
    ofstream fout("inversmodular.out");
    fin>>n>>p;
    im=1;
    b=p-2;
    while(b!=0){
        if(b%2==1)
            im=im*n%p;
        n=n*n%p;
        b=b/2;
    }
    fout<<im%p;
    return 0;
}