Thank you for the info. I understand that they are good schools, it is just that out of similar schools, I am putting them in the front because they are free to apply btw. I am actually not applying to CS or CE directly for most schools. If they do not offer a second major choice, I attempt for possibly teeny tiny less competitive choices like IS, SE, etc. (especially for CMU), and the counsellors said that these two should be okay according to their experience if I apply this strategy.