foodie

#include <iostream>
using namespace std;

int main() {
    int time;
    cin>>time;
    int pos;
    while(time>0){
      pos=0;
      int total_stall;
      cin>>total_stall;
      int arr[total_stall];
      for(int i=0;i<total_stall;i++)
        cin>>arr[i];
      while(arr[pos]!=0){
        pos= (pos+1)%total_stall;
        for(int i=0;i<total_stall;i++)
          if(arr[i]!=0)
            arr[i]--;
        }
      cout<< endl<<pos+1;
      time--;
      }
}