#include <iostream>
#include <functional>
using namespace std;

plus<int>       addition;
multiplies<int> multiplication;

int accumule_chiffres(int n, function<int(int,int)> operation,
                      int accumulateur = 0)
{
  do {
    accumulateur = operation(accumulateur, n % 10);
    n /= 10;
  } while(n > 0);

  return accumulateur;
}

int main()
{
  for (int candidat(10), nb_ok(0); nb_ok < 20; ++candidat) {
    if (   accumule_chiffres(candidat, addition         )
        == accumule_chiffres(candidat, multiplication, 1)) {
      ++nb_ok;
      cout << candidat << endl;
    }
  }

  return 0;
}