n = gets.to_i
ps = gets.split.map(&:to_i)
q = []

pos = ps.map.with_index { [_1, _2] }.sort_by { _1[0] }.map { _1[1] }
nxt = (1..n).to_a.tap { _1[-1] = nil }

n.times do |i|
  now = pos[i]
  next if nxt[now].nil?

  nx = nxt[now]
  q.push ps[now], ps[nx]
  nxt[now] = nxt[nx] = nil
  nxt[now - 1] = nx + 1 if now > 0
end

puts q.join ?\s