n,m=map(int,input().split())
a=list(map(int,input().split()))
b=list(map(int,input().split()))
c=list(map(int,input().split()))
na=[0]
for i in range(n-1):
	na+=[na[-1]+b[i%m]]
z=[u-v for u,v in zip(a,na)]
z=sorted(set(z))
d={v:i for i,v in enumerate(z)}
q=[0]*(len(z)+1)
for i in range(n):
	u,v=a[i],na[i]
	q[0]+=c[i]
	q[d[u-v]]-=c[i]
	q[d[u-v]+1]+=c[i]
for i in range(1,len(z)+1):
	q[i]+=q[i-1]
print(min(q))