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