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  1. Prepare
  2. Python
  3. Sets
  4. Set .discard(), .remove() & .pop()
  5. Discussions

Set .discard(), .remove() & .pop()

  • asamad_awais1
     + 0 comments
    n = int(input())
s = set(map(int, input().split()))

n_2 = int(input())

for i in range(n_2):
    string = input()
    if "remove" in string or "discard" in string:
        command, value = string.split()
        value = int(value)
        if command == "remove":
            s.remove(value)
        elif command == "discard":
            s.discard(value)

    else:
        s.pop()
print(sum(s))