翻译中并没有翻译以下这段话:

It is guaranteed that the sum of $n$ over all test cases does not exceed $10^6$ and that the sum of $x$ over all test cases does not exceed $10^6$ .

故申请添加以下翻译：

$1 \le \sum n, \sum x \le 10^6$

1 \le \sum n, \sum x \le 10^6