Unique Microorganism Sequence

In this problem, you are given multiple sequences of non-negative integers representing microorganisms. A microorganism is considered "unique" if its sequence contains no repeated elements. In other words, for a sequence (S = {s_1, s_2, \dots, s_n}), it is unique if (n = |{s_1, s_2, \dots, s_n}|). Your task is to determine for each sequence whether it is unique.

inputFormat

The first line of input contains an integer (T) denoting the number of sequences. Each of the next (T) lines contains a sequence of non-negative integers separated by spaces. Note: An empty line represents an empty sequence.

outputFormat

For each sequence, output a single line containing the answer: "YES" if the sequence contains no repeated elements, or "NO" otherwise.## sample

5
0 1 2 3 4
1 2 2 3 4
5 6 7 8 9
3 3 3 3 3
8 7 6 5

YES
NO
YES
NO
YES