class Solution:
    def timeRequiredToBuy(self , tickets: List[int], k: int) -> int:
        # write code here
        time=0
        while tickets[k]>0:
            for i in range(len(tickets)):
                if tickets[i]>0:
                    tickets[i]=tickets[i]-1
                    time+=1
                if tickets[k]==0:
                    break
        return time