na, nb, nc = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
c = list(map(int, input().split()))
acn = [0] * 6001
bcn = [0] * 6001
ccn = [0] * 6001
asm = [0] * 6001
bsm = [0] * 6001
csm = [0] * 6001
for i in a:
	acn[i + 3000] += 1
	asm[i + 3000] += i
for i in b:
	bcn[i + 3000] += 1
	bsm[i + 3000] += i
for i in c:
	ccn[i + 3000] += 1
	csm[i + 3000] += i
for i in range(6000, 0, -1):
	acn[i - 1] += acn[i]
	asm[i - 1] += asm[i]
	bcn[i - 1] += bcn[i]
	bsm[i - 1] += bsm[i]
	ccn[i - 1] += ccn[i]
	csm[i - 1] += csm[i]
ans = 0
for j in range(6001):
	for k in range(6001):
		if bcn[j] == 0:
			ans = max(ans, max(0, na * csm[k]) + bsm[j] * ccn[k])
		else:
			x = (-csm[k] - 1) // bcn[j] + 1
			ans = max(ans, (0 if x > 3000 else acn[max(0, x + 3000)]) * csm[k] + bsm[j] * ccn[k] + bcn[j] * (0 if x > 3000 else asm[max(0, x + 3000)]))
print(ans)