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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. int main()
  5. {
  6.     long long int t;
  7.     float ans=0;
  8.     cin>>t;
  9.     while(t>0)
  10.     {
  11.         long long int x,y,a,b,i=1;
  12.         cin>>x>>y>>a>>b;
  13.  
  14.         if( ( (y-x)%(a+b) ) == 0)
  15.             cout<<(y-x)/(a+b)<<"\n";
  16.         else
  17.             cout<<-1<<"\n";
  18.         t--;
  19.     }
  20.     return 0;
  21. }
  22.  
Success #stdin #stdout 0s 4544KB
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stdin
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Standard input is empty
stdout
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-1
https://ideone.com/bs2xCu
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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