from collections import Counter
x = int(input())
n = list(map(int,input().split()))
m = int(input())
sh =[]
for i in range(m):
    sh.append(  list( map(int,input().split())) )

dic = Counter(n)
total =0

for cust, price in sh:
    if dic[cust] > 0:  # Check if the requested size is available
        total += price
        dic[cust] -= 1  # Decrease the count for the size
        if dic[cust] == 0:  # If count becomes zero, remove the size
            del dic[cust]

print(total)