import sys

linhas = sys.stdin.read().splitlines()
amount = 0
X = int(linhas[0])
shoes_sizes = linhas[1].split()
N = linhas[2]
for linha in linhas[3:]:
    Customer = linha.split()
    shoe_size = Customer[0]
    price = Customer[1]
    if shoe_size in shoes_sizes:
        shoes_sizes.remove(shoe_size)
        amount += int(price)
        X -= 1   
print(amount)