using System;

using System.Collections.Generic;

using System.IO;

using System.Linq;

namespace Solution

{

public class Solution

{

    public static Dictionary<string, int> AverageAgeForEachCompany(List<Employee> employees)

    {

        var result = new Dictionary<string,int>();

        foreach(var company in employees.Select(x => x.Company).Distinct().OrderBy(x => x))

        {

            result.Add(company, (int)Math.Round(employees.Where(x => x.Company == company).Average(y => y.Age),0));

        }

        Console.WriteLine(result);

        return result;

    }

    public static Dictionary<string, int> CountOfEmployeesForEachCompany(List<Employee> employees)

    {

        var result = new Dictionary<string,int>();

        foreach(var e in employees.Select(x=> x.Company).Distinct().OrderBy(x=>x))

        {

            result.Add(e,employees.Where(x => x.Company == e).Count());

        }

        return result;

    }

    public static Dictionary<string, Employee> OldestAgeForEachCompany(List<Employee> employees)

    {var result = new Dictionary<string,Employee>();

        foreach(var c in employees.Select(x=>x.Company).Distinct().OrderBy(x=>x))

            result.Add(c, employees.Where(x=> x.Company == c).OrderByDescending(y=>y.Age).First());

        return result;}

    public static void Main()

    {   

        int countOfEmployees = int.Parse(Console.ReadLine());

        var employees = new List<Employee>();

        for (int i = 0; i < countOfEmployees; i++)

        {

            string str = Console.ReadLine();

            string[] strArr = str.Split(' ');

            employees.Add(new Employee { 

                FirstName = strArr[0],

                LastName = strArr[1], 

                Company = strArr[2], 

                Age = int.Parse(strArr[3]) 

                });

        }

        foreach (var emp in AverageAgeForEachCompany(employees))

        {

            Console.WriteLine($"The average age for company {emp.Key} is {emp.Value}");

        }

        foreach (var emp in CountOfEmployeesForEachCompany(employees))

        {

            Console.WriteLine($"The count of employees for company {emp.Key} is {emp.Value}");

        }

        foreach (var emp in OldestAgeForEachCompany(employees))

        {

            Console.WriteLine($"The oldest employee of company {emp.Key} is {emp.Value.FirstName} {emp.Value.LastName} having age {emp.Value.Age}");

        }

    }

}

public class Employee

{

    public string FirstName { get; set; }

    public string LastName { get; set; }

    public int Age { get; set; }

    public string Company { get; set; }

}

}