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  1. d={}
  2. n=int(input())
  3. stri=input()
  4. arr=stri.split()
  5. for a in arr:
  6. 	d[int(a)]=1
  7. print(len(d))
Success #stdin #stdout 0.05s 9848KB
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https://ideone.com/ZfMu1u
language:
Python 3 (python  3.9.5)
created:
8 days ago
visibility:
public

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