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  1. n=int(input())
  2. suma=0
  3.  
  4. for i in range(n):
  5. liczba=float(input())
  6. suma+=liczba
  7. print(suma/n)
Success #stdin #stdout 0.01s 7244KB
stdin
7
1
2
3
4
5
6
7
stdout
4.0