package main

import (
	"bufio"
	"fmt"
	"os"
	"strconv"
	"strings"
)

type Scanner struct {
	reader  *bufio.Reader
	buffer  []string
	pointer int
}

func NewScanner() *Scanner {
	return &Scanner{
		reader:  bufio.NewReaderSize(os.Stdin, 4096),
		pointer: 0,
	}
}

func (self *Scanner) NextLine() string {
	var buffer []byte
	for {
		line, isPrefix, _ := self.reader.ReadLine()
		buffer = append(buffer, line...)
		if !isPrefix {
			break
		}
	}
	return string(buffer)
}

func (self *Scanner) Next() string {
	if self.pointer >= len(self.buffer) {
		line := self.NextLine()
		self.buffer = strings.Fields(line)
		self.pointer = 0
	}
	self.pointer++
	return self.buffer[self.pointer-1]
}

func (self *Scanner) NextInt() int {
	s := self.Next()
	i, _ := strconv.ParseInt(s, 10, 32)
	return int(i)
}

func (self *Scanner) NextLong() int64 {
	s := self.Next()
	l, _ := strconv.ParseInt(s, 10, 64)
	return int64(l)
}

func (self *Scanner) NextFloat() float32 {
	s := self.Next()
	f, _ := strconv.ParseFloat(s, 32)
	return float32(f)
}

func (self *Scanner) NextDouble() float64 {
	s := self.Next()
	d, _ := strconv.ParseFloat(s, 64)
	return float64(d)
}

func main() {
	cin := NewScanner()

	N := cin.NextInt()

	S := make([]string, N)
	for i := 0; i < N; i++ {
		S[i] = cin.Next()
	}

	freq := make([]int, 1000+1)
	for i := 0; i < N; i++ {
		cnt := 0
		for _, c := range S[i] {
			if c == '^' {
				cnt++
			}
		}
		freq[cnt]++
	}

	maxFreq := 0
	maxCount := 0
	for i := 0; i < 1000+1; i++ {
		if freq[i] > maxCount {
			maxFreq = i
			maxCount = freq[i]
		} else if freq[i] == maxCount {
			maxFreq = i
		}
	}
	fmt.Println(maxFreq)
}