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  1. #include <iostream>
  2.  
  3. using namespace std;
  4.  
  5. string a, b;
  6.  
  7. int main(){
  8. 	cin >> a >> b;
  9. 	if (a.size() > b.size()){
  10. 		cout << a.size();
  11. 		return 0;
  12. 	}else{
  13. 		if (a.size() < b.size()){
  14. 			cout << b.size();
  15. 			return 0;
  16. 		}else{
  17. 			if (a == b) cout << -1;
  18. 			else{
  19. 				cout << a.size();
  20. 			}
  21. 		}
  22. 	}
  23. 	return 0;
  24. }
Success #stdin #stdout 0s 15240KB
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https://ideone.com/q0wwE9
language:
C++ (gcc 8.3)
created:
9 years ago
visibility:
public

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