Lucky

$\ \ \ \ $Chaos August likes to study the lucky numbers.

$\ \ \ \ $For a set of numbers S,we set the minimum non-negative integer,which can't be gotten by adding the number in S,as the lucky number.Of course,each number can be used many times.

$\ \ \ \ $Now, given a set of number S, you should answer whether S has a lucky number."NO" should be outputted only when it does have a lucky number.Otherwise,output "YES".

$\ \ \ \ $The first line is a number T,which is case number.

$\ \ \ \ $In each case,the first line is a number n,which is the size of the number set.

$\ \ \ \ $Next are n numbers,means the number in the number set.

$\ \ \ \ 1\le n\le 10^5,1\le T \le 10,0\le a_i \le 10^9$.

$\ \ \ \ $Output“YES”or “NO”to every query.

1
1
2

NO

BestCoder Round #80