using System;
using System.Collections.Generic;
using System.Text.RegularExpressions;

namespace RegEx{
    class Program{
        public static bool Control(string data){   //Функция поиска
            if(data[0] == ' ' || data[data.Length-1] == ' '){
                return false;
            }
            Regex regex = new Regex(@"^([0-7])(T[A|B|E]X) \d{4}$");
            MatchCollection matches = regex.Matches(data);
            if (matches.Count == 1){
                return true;
            }
            return false;
        }
        static void Main(string[] args){
            int n;
            n = int.Parse(Console.ReadLine());
            string line;
            List<string> dataS = new List<string>();
            for (int i = 0; i < n; i++){
                line = Console.ReadLine();
                if (Control(line)) {
                   dataS.Add(line);
                }
            }

            string str;
            long tmp = dataS.Count;
            for(int i = 0; i < dataS.Count; i++){
                str = dataS[i];
                if(str[0] != '7' && str[2] == 'E'){
                    tmp--;
                } else if (str.Contains("0000")){
                    tmp--;
                }
            }
            Console.WriteLine(tmp);
        }
    }
}