Conversie_B_10

#include <fstream>
using namespace std;
ifstream f("conversie_b_10.in");
ofstream g("conversie_b_10.out");

int main()
{
    int n,b,nr=0,p=1;
    f>>n>>b;
    while(n)
        nr+=n%10*p,p*=b,n/=10;
    g<<nr;
    return 0;
}