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#include <fstream>
using namespace std;
ifstream in("gfact.in");
ofstream out("gfact.out");
long long p,q;
long long nr(long long n)
{
long long nrz=0,i=p;
while(i<=n)
{
nrz=nrz+n/i;
i=i*p;
}
return nrz;
}
int main()
{
long long a,mij,i,st=1,dr=2147483646,ok=0;
in>>p>>q;
while(st<=dr)
{
mij=(st+dr)/2;
if(nr(mij)>=q)
dr=mij-1;
else
st=mij+1;
}
out<<st;
return 0;
}