def traverse
  a = []
  length = 1
  now = 0
  @list[now] = 1
  loop do
   @n.times do |i|
     if @m[now][i] == 1 && @list[i] == 0
       a.push([i, length + 1])
       @data[i].length = length
       @list[i] = 1
     end
   end
   if a.empty?
     return nil
   end
   next_one = a.shift
   now = next_one[0]
   length = next_one[1]
  end
  return @list
end

D = Struct.new(:length)
@n = gets.chomp.to_i
@time = 0
@m = Array.new(@n){Array.new(@n){0}}
@data = Array.new(@n){D.new(-1)}
@list = Array.new(@n){0}
@n.times do
	s = gets.split.map(&:to_i)
	i = s[0] - 1
	s[1].times do |l|
		j = s[l + 2] - 1
		@m[i][j] = 1
	end
end
@data[0].length = 0
traverse

@n.times do |i|
	puts "#{ i + 1 } #{@data[i].length}"
end