using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;

namespace YukiCoder
{
    class Program
    {
        static void Main(string[] args)
        {
            Dictionary<int, int> dic = new Dictionary<int, int>() { { 0, 0 } };
            int N = int.Parse(Console.ReadLine());
            for (int i = 0; i < N; i++)
            {
                int n = Console.ReadLine().Count(c => c == '^');
                if (dic.ContainsKey(n)) dic[n]++;
                else                    dic.Add(n, 1);
            }
            var va = dic.OrderByDescending(a => a.Key).OrderByDescending(x => x.Value).Take(1).ToArray();
            Console.WriteLine(va[0].Key);
//          Console.ReadLine();
        }
    }
}