At the basement of a building with 5 floors, Adam, Bob, Cindy, Diana and Edward entered the elevator. The elevator goes only up and doesnâ€™t come back, and each person gets out of the elevator at one of the five floors. In how many ways can the five people leave the elevator in such a way that at no time are there a male and a female alone in the elevator?

Did anybody get the joke in the title? :D

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