from collections import Counter

shoe_total = int(input().strip())
shoe_list = list(map(int, input().split()))
customers = int(input())
count_shoes = Counter(shoe_list)
total = 0

for _ in range(customers):
    shoe_size, price = list(map(int, input().split()))
    if count_shoes[shoe_size] > 0:
        count_shoes[shoe_size] -=1
        total += price

print(total)