from collections import Counter

X = int(input()) sizes = list(map(int, input().split())) customers = int(input()) orders = list()

for i in range(customers): x, y = map(int, input().split()) orders.append({x: y})

sizes_count = Counter(sizes)

list_prices = list()

for order in orders: k, v = list(order.items())[0] if (k in sizes_count.keys()) & (sizes_count[k] > 0): sizes_count[k] -= 1 list_prices.append(v)

print(sum(list_prices))