Hello aspirant,
With an 82% score, you have a good chance of securing admission to several reputable colleges in Pune and Mumbai through lateral entry in BTech CSE. These are the following potential colleges in Pune:
MIT-WPU: Known for its strong engineering programs and good placement records
College of Engineering, Pune (COEP): A prestigious government institute with a strong academic reputation.
Vishwakarma Institute of Technology (VIT): Offers various engineering programs and has a good industry connect.
D.Y. Patil College of Engineering: Offers multiple specializations within CSE and has a decent placement record.
Pimpri Chinchwad College of Engineering: Known for its strong industry collaborations.

These are the following potential colleges in Mumbai:
VJTI Mumbai: A government institute with a strong legacy in engineering education
KJ Somaiya College of Engineering: Offers excellent infrastructure and good placement opportunities.
Sardar Patel Institute of Technology: Known for its strong industry interactions.