from collections import *

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 = sum(C)
D = defaultdict(int)

now = 0
for i in range(N):
    D[A[i] - now] += C[i]
    now += B[i%M]

ans = 10 ** 18
for k, v in D.items():
    ans = min(ans, S - v)

print(ans)