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  1. #include <iostream>
  2. using namespace std;
  3.  
  4. int main() {
  5. 	int t;
  6. 	cin>>t;
  7. 	for(int i=0;i<t;i++){
  8. 		int x,y,a,b;
  9. 		cin>>x>>y>>a>>b;
  10. 		int d=y-x;
  11. 		int v=a+b;
  12. 		if(d%v==0){
  13. 			cout<<d/v<<'\n';
  14. 		}
  15. 		else{
  16. 			cout<<"-1\n";
  17. 		}
  18. 	}
  19. 	return 0;
  20. }
Success #stdin #stdout 0s 4404KB
comments (?)
stdin
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5
0 10 2 3
0 10 3 3
900000000 1000000000 1 9999999
1 2 1 1
1 3 1 1
stdout
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2
-1
10
-1
1
https://ideone.com/SzFTGs
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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