Kripa has invited a list of people for an event. She has handed over the list to the security personnel, Sushant, to make sure that only those that are invited are present.
Help Sushant ensure that the attendees are the ones who were invited by cross verifying the attendees list with the invitees list. Use the .issubset() to check the same. Print All attendees are verified if all the attendees were invited else print Some attendees were not invited if attendees are not present in invitees list.