from collections import defaultdict
dic = defaultdict(int)
N,M = map(int,input().split())
A = list(map(int,input().split()))
B = list(map(int,input().split()))
C = list(map(int,input().split()))
tmp = 0
for i,a in enumerate(A):
    dic[a - tmp] += C[i]
    tmp += B[i % M]
print(sum(C) - max(dic.values()))