namespace _05._Filter_By_Age
{
    using System;
    using System.Collections.Generic;
    using System.Linq;

    public class StartUp
    {

        public static void Main()
        {
            var n = int.Parse(Console.ReadLine());
            var students = new Dictionary<string, int>();

            for (int i = 0; i < n; i++)
            {
                var currentStudent = Console.ReadLine().Split(new string[] { ", " }, StringSplitOptions.RemoveEmptyEntries).ToArray();
                var name = currentStudent[0];
                var age = int.Parse(currentStudent[1]);
                if (!students.ContainsKey(name))
                {
                    students[name] = age;
                }
            }
            var condition = Console.ReadLine();
            var ageFilter = int.Parse(Console.ReadLine());
            var format = Console.ReadLine();

            var filteredStudents = FilteringStudents(condition, students, ageFilter);

            PrintResult(students, format);
        }

        public static Dictionary<string, int> FilteringStudents(string condition, Dictionary<string, int> students, int ageFilter)
        {
            switch (condition)
            {
                case "older":
                    return students.Where(p => p.Value >= ageFilter).ToDictionary(k => k.Key, v => v.Value);
                default:
                    return students.Where(p => p.Value < ageFilter).ToDictionary(k => k.Key, v => v.Value);
            }
        }

        public static void FilteredStudents(string condition, Dictionary<string, int> students, int age)
        {
            var filteredStudents = FilteringStudents(condition, students, age);
        }

        public static void PrintResult(Dictionary<string, int> filteredStudents, string format)
        {
            switch (format)
            {
                case "name age":
                    foreach (var student in filteredStudents)
                    {
                        Console.WriteLine($"{student.Key} - {student.Value}");
                    }
                    break;
                case "age":
                    foreach (var student in filteredStudents)
                    {
                        Console.WriteLine(student.Value);
                    }
                    break;
                case "name":
                    foreach (var student in filteredStudents)
                    {
                        Console.WriteLine(student.Key);
                    }
                    break;
            }
        }
    }
}