from collections import Counter
from operator import itemgetter

n, m = map(int, input().split())
arr = map(int, input().split())
A = map(int, input().split())
B = map(int, input().split())

counter = Counter(arr)
happiness = sum(itemgetter(*A)(counter))
sadness = sum(itemgetter(*B)(counter))

print(happiness - sadness)