College Admissions - Computer Science Profile

I am a high school junior Currently at USACO Gold, aspiring to be USACO Platinum in Dec. Also, I am a NYU hackathon First Place Winner. Currently having a close to perfect GPA, Perfect SAT Scores , Perfect SAT II Scores in MATH/CHEMISTRY ? Apart from this I have my own Web product launch at School that has 200 Active users. Have some queries regarding improving my chances at Ivy’s

  1. Can Hackathon Winners be a spike in Top Schools
  2. How about contributing at gitHub/DevPost ?

Can you suggest a few more ?