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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	// your code goes here
  6. 	int t,v1,v2,s;
  7. 	cin >> t;
  8.  
  9. 	while(t){
  10. 		cin >> v1 >> v2;
  11. 		s=2*((v1*v2)/(v1+v2));
  12. 		cout << s << endl;
  13. 		t--;
  14. 	}
  15. 	return 0;
  16. }
Success #stdin #stdout 0s 3460KB
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https://ideone.com/Ntmr5N
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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