N,M=map(int,input().split())
A=list(map(int,input().split()))
B=list(map(int,input().split()))
C=list(map(int,input().split()))
v=[0]*N
for i in range(1,N):
  v[i]=v[i-1]+B[(i-1)%M]
T={}
for i in range(N):
  w=A[i]-v[i]
  if not w in T:
    T[w]=C[i]
  else:
    T[w]+=C[i]
k=0
for n in T:
  k=max(k,T[n])
u=sum(C)
print(u-k)