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  1. #include <bits/stdc++.h>
  2.  
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int t;
  7. 	cin >> t;
  8. 	while(t--){
  9. 		int n;
  10. 		string s;
  11. 		cin >> n >> s;
  12. 		int a = sqrt(n);
  13. 		//cout << a << endl;
  14. 		if(a * a == n){
  15. 			int zero_c = 0;
  16. 			for(int i=0;i<s.size();i++){
  17. 				if(s[i] == '0')
  18. 					zero_c++;
  19. 			}
  20. 			if(zero_c == (a-2)*(a-2))
  21. 				cout << "Yes\n";
  22. 			else
  23. 				cout << "No\n";
  24. 		}
  25. 		else
  26. 			cout << "No\n";
  27. 	}
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0.01s 5280KB
comments (?)
stdin
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5
2
11
4
1111
9
111101111
9
111111111
12
111110011111
stdout
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No
Yes
Yes
No
No
https://ideone.com/GoJgKP
language:
C++14 (gcc 8.3)
created:
1 day ago
visibility:
public

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