Dear student,

If you have scoured rank 1, there will be no reservation needed in your case the quota are applicable as the number of seats to be filled by the specific category candidate.

For example: if the no. of seats are 100 in total and there is a 20% reservation for specific category that means the seats that are have to be filled by specific category students are 20, no matter how good a student of general category is he would not be allowed in that 20 seats.

As for your condition you already have scored rank first for the seat so the seat will be allotted to you under the open category.