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()