from collections import defaultdict
n, m = map(int, input().split())
a = list(map(int, input().split()))
b = list(map(int, input().split()))
c = list(map(int, input().split()))
s = [0]
for i in range(n - 1):
	s.append(s[-1] + b[i % m])
for i in range(n):
	a[i] -= s[i]
d = defaultdict(list)
for i in range(n):
	d[a[i]].append(c[i])
k = 0
for i, j in d.items():
	k = max(k, sum(j))
print(sum(c) - k)