from collections import Counter
X = int(input())
myList = list(map(int, input().split()))
shoes = dict(Counter(myList))
N = int(input())
earnings = 0
for i in range(N):
    size, price = map(int,input().split())
    try:
        if shoes[size] > 0:
            shoes[size] -= 1
            earnings += price
    except KeyError:
        pass
print(earnings)