n, m = map(int, input().split())
al = list(map(int, input().split()))
bl = list(map(int, input().split()))
cl = list(map(int, input().split()))
ans = float("inf")
l = al[:]
tmp = 0
for i in range(n - 1):
    # a1固定
    a1 = l[i]
    a2 = l[i + 1]
    if a2 - a1 == bl[i % m]:
        continue
    l[i + 1] = bl[i % m] + a1
    tmp += cl[i + 1]
ans = min(ans, tmp)
tmp = 0
for j in range(n - 2, -1, -1):
    # a2固定
    a1 = al[j]
    a2 = al[j + 1]
    if a2 - a1 == bl[j % m]:
        continue
    al[j] = a2 - bl[j % m]
    tmp += cl[j]
ans = min(ans, tmp)
print(ans)