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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin>>t;
  7. 	while(t--){
  8. 		long long n;
  9. 		cin>>n;
  10. 		long long a[n],sum=0;
  11. 		for(long long i=0;i<n;i++){
  12. 		  cin>>a[i];	
  13. 		  sum=sum+a[i];
  14. 		}
  15. 		long long k=sqrt(sum);
  16. 		if(k*k==sum) 
  17. 		cout<<"YES"<<endl;
  18. 		else 
  19. 		cout<<"NO"<<endl;
  20. 	}
  21. 	return 0;
  22. }
Success #stdin #stdout 0.01s 5328KB
comments (?)
stdin 
5
1
9
2
14 2
7
1 2 3 4 5 6 7
6
1 3 5 7 9 11
4
2 2 2 2
stdout 
YES
YES
NO
YES
NO
https://ideone.com/IIOjAo
language:
C++ (gcc 8.3)
created:
1 day ago
visibility:
public

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