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# Author Problem Lang Verdict Time Memory Sent Judged  
169516823 Practice:
quangltfsc0378 		1438B - 22 PyPy 3-64 Accepted 62 ms 2384 KB 2022-08-24 15:50:35 2022-08-24 15:50:35
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for _ in[*open(0)][2::2]:
 s=[*map(int,_.split())]
 print('YNEOS'[len(s)==len(set(s))::2])
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Time: ? ms, memory: ? KB
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