import times, strutils, sequtils, math, algorithm, tables, sets, lists, intsets
import critbits, future, strformat, deques
template `max=`(x,y) = x = max(x,y)
template `min=`(x,y) = x = min(x,y)
template `mod=`(x,y) = x = x mod y
template scan2 = (scan(), scan())
template scan3 = (scan(), scan())
let read* = iterator: string {.closure.} =
    while true: (for s in stdin.readLine.split: yield s)
proc scan(): int = read().parseInt
proc scanf(): float = read().parseFloat
proc toInt(c:char): int =
    return int(c) - int('0')



proc solve()=
  var
    n = scan()
    m = scan()
    r = newseqwith(n,newseqwith(m,scan()))
    maxParam = newseqwith(m,0)
    parameterNum = newseqwith(m,initTable[int,HashSet[int]()]())
  for k in 0..<n:
    for p in 0..<m:
      if parameterNum[p].hasKeyOrPut(r[k][p],@[k].toHashSet()):
        parameterNum[p][r[k][p]].incl(k)
      maxParam[p].max=r[k][p]
    var t = parameterNum[0][maxParam[0]]
    for p in 1..<m:
      t = t + parameterNum[p][maxParam[p]]
    echo t.len


  

  
solve()