N=int(input())
A = sorted([int(x) for x in input().split()])
B = sorted([int(x) for x in input().split()])
C = sorted([int(x) for x in input().split()])

happy=0
for i in range(0,N-1):
  happy+=B[A[i]]
  if A[i+1] == A[i] + 1:
    happy+=C[A[i]]
happy+=B[A[N-1]]
print(happy)