Hey . 

Never mind but your question is literally illogical.As the number of hours we give to our study never determine our rank. For getting first rank,  you should also follow some other factors like dedication,  hardwork in a positive direction,  complete guided syllabus etc.In cases,  it can happen you are giving 16-18 hours of your day to preparation. But you are not dedicated,  or you do not know the best books or complete syllabus, then your hourly studies will go in vain.

Hope you understood my point!

Best regards:)