public static int balancedSum(List<Integer> sales) {
    // Write your code here     
		int sum =0;
        for(int i=0;i<list.size();i++){
            sum += list.get(i);
        }
        int curr =list.get(0);
        for(int i=1;i<list.size();i++){
            if(curr == sum - curr - list.get(i)){
                return i;
            }
            curr += list.get(i);
        }
        return -1;
    }