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# Author Problem Lang Verdict Time Memory Sent Judged  
98292983 Contestant:
Essi 		1438B - 22 Python 3 Accepted 124 ms 908 KB 2020-11-13 17:48:22 2020-11-13 20:37:52
→ Source 
for q in range(int(input())):
	n = int(input())
	b = list(map(int, input().split()))
	print('NO' if len(set(b)) == n else "YES")
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Time: ? ms, memory: ? KB
Verdict: ?
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