C = 777
N, M = gets.split.map &:to_i
a = [0] * N
$<.map{|s|
  b = s.split.map &:to_i
  a = a.zip(b).map{|x,y|x+y}
  cusum = [sum = 0] + a.map{|x|sum+=x}
  l = r = 0
  while r <= N
    sum = cusum[r] - cusum[l]
    case sum <=> C
    when -1; r += 1
    when 0
      puts :YES
      exit
    when 1; l += 1
    end
  end
}
puts :NO