#include <iostream>
#include <iomanip>
using namespace std;

pair<double, double> SumDob (double a, double b){
	return make_pair(a + b, a * b);
}
 
int main() {
	int n;
	cin>>n;
	while (n--){
		double a, b;
		cin>>a>>b;
		cout<<fixed<<setprecision(4)<<SumDob(a,b).first<<" "<<SumDob(a,b).second<<endl;
	}
	return 0;
}