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Dec 3rd, 2019
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  1. #include <bits/stdc++.h>
  2. #define db double
  3. using namespace std;
  4. int main ()
  5. {
  6. int n;
  7.  
  8. cin >>n;
  9.  
  10.  
  11. while (n--)
  12. {
  13. cin >>a>>b;
  14.  
  15. db ma ,mi;
  16.  
  17. ma= max (a,b);
  18. mi = min (a,b);
  19.  
  20. db x = ma - mi ;
  21.  
  22. if (x*2==mi)
  23. cout <<"yes"<<endl;
  24. else
  25. cout<<"no"<<endl;
  26.  
  27. }
  28. return 0;
  29. }
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