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  1. #include<iostream>
  2. using namespace std;
  3. int main()
  4. {
  5. 	long long int i,n,each,min;
  6. 	cin>>n;
  7. 	while(n!=-1)
  8. 	{
  9. 		long long int a[n],sum=0;
  10. 		for(i=0;i<n;i++)
  11. 		{
  12. 			cin>>a[i];
  13. 			sum+=a[i];
  14. 		}
  15. 		if(sum%n!=0)
  16. 			cout<<-1;
  17. 		else
  18. 		{
  19. 			min=0;
  20. 			each=sum/n;
  21. 			for(i=0;i<n;i++)
  22. 			{
  23. 				if(a[i]>each)
  24. 					min+=(a[i]-each);
  25. 			}
  26. 			cout<<min<<endl;
  27. 		}
  28. 		cin>>n;
  29. 	}
  30. return 0;
  31. }
Success #stdin #stdout 0s 3100KB
comments (?)
stdin
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5
1
1
1
1
6
2
3
4
-1
stdout
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4
-1
https://ideone.com/3yDtFb
language:
C++14 (gcc 8.3)
created:
10 years ago
visibility:
public

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