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到底怎么错啊???高手们帮忙啊。难道我理解错了??还是。。。。。。。。。。。#include <iostream.h>
int main(void){
unsigned long long t, s, d;
cin >> t;
while(t--){
cin>> s>>d;
if(s<d) cout<<"impossible"<<endl;
else {
if(s%2 ==0) cout <<(s/2+d/2)<<' '<<(s-d)/2<<endl;
else cout <<((s-1)/2+(d+1)/2)<<' '<<(s-d)/2<< endl;
}
}
return 0;
}
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