import strutils, tables, algorithm

let N = stdin.readLine.parseInt
var dic = initCountTable[int]()

for i in 0 ..< N:
  dic.inc stdin.readLine.count('^')

var eyes_num = newSeq[int]()
let crt_num = dic.largest.val

while dic.largest.val == crt_num:
  eyes_num.add dic.largest.key
  dic[dic.largest.key] = 0

echo eyes_num.sorted(cmp, Descending)[0]