import collections

X = int(input())
shoe_sizes = list(map(int, input().split()))
shoefreq_list = dict(collections.Counter(shoe_sizes))

N = int(input())
total_amount = 0

for i in range(N):
    shoe_size, price = map(int, input().split())
    
    if(shoe_size in shoefreq_list.keys() and shoefreq_list[shoe_size] > 0):
        total_amount += price
        shoefreq_list[shoe_size] -= 1

print(total_amount)