L1, L2, L3 = map(int, input().split())
rby = list(map(int, input().split()))
l = [2*(L1+L2), 2*(L2+L3), 2*(L3+L1)]
l.sort()
rby.sort(reverse=True)
ans = sum([li*rby_i for li, rby_i in zip(l, rby)])

print(ans)