Purchase 

def main():
    size = 0
    size = 0
    res = 0
    shoes = int(input())
    arr = input().split(" ")
    cus = int(input())
    for i in range(cus):
        size, pur = input().split()
        if size in arr:
            res += int(pur)
            arr.remove(size)
            
             
    print(res)
    #for i in n:
     #   if i.isalnum():
    
if __name__ == "__main__":
    main()