First things first – the top 5 salaries offered at an institute do not reflect its quality, esp. if that institute has 780 students to place.
Given the exchange rate scenario, it is usually the international placements which constitute the list of top 5 placements in terms of salary. Given that salaries and placements vary from year to year, it would be a better idea to give a range of the top 5 salaries rather than specific figures. The top 5 salaries would be in the range of INR 80 lakhs to 1.2 crores (including variable and perks like car but not adjusted for PPP). You would notice that the range is very wide as not many companies pay in this salary bracket and such companies may or may not return to campus every year.
Note: It would have helped if you would have shared the objective of asking the question.