N, M = gets.split.map &:to_i
R = $<.map{|s| s.split.map &:to_i }

maximum = M.times.map{ [0, [-1]]}

R.each_with_index{|r, i|
  maximum = maximum.zip(r).map{|(max, idxs), x|
    case x <=> max
    when 1
      [x, [i]]
    when -1
      [max, idxs]
    else
      [max, idxs+[i]]
    end
  }
  p maximum.flat_map{|max, idxs|
    idxs
  }.uniq.size
}