n = gets.to_i
a = (1..n).map { gets.to_i }
if a.uniq.size == 1 && a[0] < n
	puts -1
	exit
end

ans = (0...n).to_a
(0...n).each do |i|
	if a[i] == ans[i]
		j = (i + 1) % n
		ans[i], ans[j] = ans[j], ans[i]
	end
end
puts ans