#include <iostream>
using namespace std;
int main()
{
	long long x,y,z,w,b,t;
	cin>>t;
	for(long long k=1;k<=t;++k)
	{
		cin>>b>>w>>x>>y>>z;
		long long ans=0;
		if(x>y)
		{
			swap(x,y);
			swap(w,b);
		}
		ans=x*b;
		if(z+x<y)
			ans=ans+w*(z+x);
		else
			ans+=y*w;
		cout<<ans<<endl;

	}

}