#include<fstream>
#define MOD 9901
using namespace std;
ifstream fin("sumdiv.in");
ofstream fout("sumdiv.out");
int lgnp(int a,int b)
{
    int r=1;
    while(b)
    {
        if((b&1)==1) r=(1LL*r*a)%MOD;
        a=1LL*a*a%MOD;
        b/=2;
    }
    return r;
}
int a,b,n;
int main()
{
    fin>>a>>b;
    n=(lgnp(a,b+1)-1)/(a-1);
    fout<<n;
    return 0;
}