nq = gets.split.map(&:to_i)
ary = Array.new(nq[0]){[]}

nq[1].times do
  odr = gets.split.map(&:to_i)
  case odr[0]
  when 0
    ary[odr[1]] << odr[2]
  when 1
    puts ary[odr[1]].join(" ")
  when 2
    ary[odr[1]].clear
  end
end
