N = input()
N = int(N)

a_sub = input().split(" ")
a = [int(n0) for n0 in a_sub]
# print(a)

b_sub = input().split(" ")
b = [int(n0) for n0 in b_sub]
# print(b)

c_sub = input().split(" ")
c = [int(n0) for n0 in c_sub]
# print(c)

score = 0
for xi in range(N):
    score = score + b[xi]

# print(score)

for xi in range(N-1):
    if a[xi+1]==a[xi]+1:
        score = score + c[a[xi]-1]
        print(xi, c[xi])
print(score)
