module Main where

import Control.Monad (replicateM_)

solve :: Int -> Int -> Int -> Int -> Int -> Int
solve b w bc wc z
    | bc > wc + z = (b + w) * wc + b * z
    | wc > bc + z = (b + w) * bc + w * z
    | otherwise = b * bc + w * wc

main :: IO ()
main = do
    cases <- readLn :: IO Int
    replicateM_ cases $ do
        [b, w] <- map read . words <$> getLine
        [bc, wc, z] <- map read . words <$> getLine
        print $ solve b w bc wc z