import strutils, algorithm

let N = stdin.readLine.parseInt
var crts = newSeq[tuple[eyes_num, crt_num: int]]()

for i in 0 ..< N:
  let new_eyes_num = stdin.readLine.count('^')

  block block_1:
    for i, crt in crts:
      if new_eyes_num == crt.eyes_num:
        crts[i].crt_num += 1
        break block_1
    crts.add (new_eyes_num, 1)

echo sortedByIt(crts, (-it.crt_num, -it.eyes_num))[0].eyes_num