class Solution {
    public int timeRequiredToBuy(int[] tickets, int k) {
        int time=0;
        while(tickets[k]!=0){
            for(int i=0; i<tickets.length; i++){
                if(tickets[i]-- > 0) time++;
                if(tickets[k]==0) break;
            }
        }
        
        return time;
    }
}