Hi Prasad
Congratulations if your are getting 418 marks in Neet examination in 2019 they you will be able to convert government medical college with your score as you belong to ST caste the possibility to getting top medical college is high If you want more details about the college and cutoff I am providing you can a link you can follow these link to get more information and these link has plus to that you can predict your college according to score

http://www.medicine.careers360.com
Hope above information is useful
Good luck