Challenge - #52 - Set .discard(), .remove(), & .pop()

n = int(input())

s = set(map(int, input().split()))

for i in range(int(input())):

    inp = input()

    if inp == "pop":

        s.pop()

    else:

        command , value = inp.split()

        if command == "discard":

            s.discard(int(value))

        else:

            s.remove(int(value))

print(sum(s))