#include "SquareFreeString.cpp"

int main(int argc, char **argv)
{
  int i;
  class SquareFreeString TheClass;
  string retval;
  string s;

  if (argc != 2) { fprintf(stderr, "usage: a.out num (or - and read from stdin)\n"); exit(1); }

  if ((string) argv[1] == "-") {
    cin >> s;
  } else {

    if (atoi(argv[1]) == 0) {
      s = "bobo";
    }
  
    if (atoi(argv[1]) == 1) {
      s = "apple";
    }
  
    if (atoi(argv[1]) == 2) {
      s = "pen";
    }
  
    if (atoi(argv[1]) == 3) {
      s = "aydyamrbnauhftmphyrooyq";
    }
  
    if (atoi(argv[1]) == 4) {
      s = "qwertyuiopasdfghjklzxcvbnm";
    }
  }

  retval = TheClass.isSquareFree(s);
  cout << retval << endl;

  exit(0);
}