from collections import Counter
if __name__=='__main__':
    X,shoe_sizes,N=int(input()),Counter(list(map(int, input().split()))),int(input())
    earnings=0
    for _ in range(N):
        size,price= map(int, input().split())
        if size in shoe_sizes.keys() and shoe_sizes[size]>0:
            earnings+=price
            shoe_sizes[size]-=1
        
    print(earnings)