> #include<iostream>
> using namespace std;
> int main()
> {
>     int cyle,a,b;
>     cin>>cyle;
>     while(cyle--) {
>         cin>>a>>b;
>         if(a<b||(a+b)%2||(a-b)%2)cout<<"impossible"<<endl;
>         else
>         {
>             cout<<(a+b)/2<<" "<<(a-b)/2<<endl;
>         }
>     }
>     return 1;
> }

• Re:水的太水了……要判断两数和以及两数差是否是偶数-function attached (34) analysiser 2009-07-18 18:13:38