Zoo Design

 ch, cc, ca = map(int, input().split())

ah, ac, aa = map(int, input().split())

mh, mah = map(int, input().split())

mc, mac = map(int, input().split())

ma, maa = map(int, input().split())

ta = int(input())

temp = min(ch, cc, ca)

if temp == ch:

 a1 = ah * temp

 x = ah

elif temp == cc:

 a1 = ac * temp

 x = ac

else:

 a1 = aa * temp

 x = aa

# print(a1, x)

temp = max(ch, cc, ca)

if temp == ch:

 a2 = mh * mah * ch

 y = mh * mah

elif temp == cc:

 a2 = mc * mac * cc

 y = mc * mac

else:

 a2 = ma * maa * ca

 y = ma * maa

# print(a2, y)

z = ta - (x + y)

arr = []

arr.append(ch)

arr.append(cc)

arr.append(ca)

sor_arr = sorted(arr)

a3 = z * sor_arr[1]

# print(a3, z)

print(a1 + a2 + a3)