Look you are a great candidate with a great overall resume. But you have to understand that at the first 18 schools you listed you are going against kids that have similar or better stats. All of your top 18 are lottery picks especially for CS. You could get rejected at all of them despite your incredible stats. Also as mentioned by others the cost has to be considered as well. It is unclear if your parents willing to pay full amount for these schools. As you mentioned you might want to consider expanding you applications to include UMD Wisconsin etc.
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