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IMO 1959–1966 - Longlisted Problems (individual years unknown) Question 51

IMO Shortlist · IMO 1959–1966 - Longlisted Problems (individual years unknown)

Question 51

(USS) In a school, $n$ children numbered $1$ to $n$ are initially arranged in the order $1,2,\ldots,n$. At a command, every child can either exchange its position with any other child or not move. Can they rearrange into the order $n,1,2,\ldots,n-1$ after two commands?