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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin >> t;
  7. 	while(t--){
  8. 		int a, b, c, d;
  9. 		cin>>a>>b>>c>>d;
  10. 		if(a==b && a==c && a==d){
  11. 			cout<<"YES"<<endl;
  12. 		}
  13. 		else{
  14. 			cout<<"NO"<<endl;
  15. 		}
  16. 	}
  17. 	return 0;
  18. }
Success #stdin #stdout 0.01s 5320KB
comments (?)
stdin
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7
1 2 3 4
1 1 1 1
2 2 2 2
1 2 1 2
1 1 5 5
5 5 5 5
4 10 5 9
stdout
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NO
YES
YES
NO
NO
YES
NO
https://ideone.com/78dIPI
language:
C++ (gcc 8.3)
created:
12 hours ago
visibility:
public

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