学步园

#include <iostream>
using namespace std;

 int main()
 {
	cout.precision(2);
	cout.setf(ios::fixed);
	int s,m,n;
	cin>>s;
	for (int ii=0;ii<s;ii++)
	{
		cin>>m>>n;
		double sum=0;
		sum=m*n;
		cout<<"Scenario #"<<ii+1<<":\n";
		if(m*n%2==0)
			cout<<sum;
		else
			cout<<sum+0.41;
		cout<<"\n\n";
	}
 }