main() : int {
  print 2;
  i := 3;
  while i < 100 {
    composite := false;
    j := 3;
    while j < i {
      if i % j == 0 {
        composite = true;
        break;
      }
      j = j + 2;
    }
    if not composite {
      print i;
    }
    i = i + 2;
  }
}