from collections import Counter

X = int(input(""))
X_list = list(map(int, input("").split()))
N = int(input(""))

shoe_size = Counter(X_list)
sum = 0
for i in range(N):
    size, amount = tuple(map(int, input("").split()))
    if size in shoe_size.keys() and shoe_size[size] != 0:
        shoe_size[size] -= 1
        sum += amount
        
print(sum)