using System;

public class Startup
{
    public static void Main()
    {
        Type personType = typeof(Person);
        ConstructorInfo emptyCtor = personType.GetConstructor(new Type[] { });
        ConstructorInfo ageCtor = personType.GetConstructor(new[] { typeof(int) });
        ConstructorInfo nameAgeCtor = personType.GetConstructor(new[] { typeof(string), typeof(int) });
        bool swapped = false;
        if (nameAgeCtor == null)
        {
            nameAgeCtor = personType.GetConstructor(new[] { typeof(int), typeof(string) });
            swapped = true;
        }

        string name = Console.ReadLine();
        int age = int.Parse(Console.ReadLine());

        Person basePerson = (Person)emptyCtor.Invoke(new object[] { });
        Person personWithAge = (Person)ageCtor.Invoke(new object[] { age });
        Person personWithAgeAndName = swapped ? (Person)nameAgeCtor.Invoke(new object[] { age, name }) : (Person)nameAgeCtor.Invoke(new object[] { name, age });

        Console.WriteLine("{0} {1}", basePerson.name, basePerson.age);
        Console.WriteLine("{0} {1}", personWithAge.name, personWithAge.age);
        Console.WriteLine("{0} {1}", personWithAgeAndName.name, personWithAgeAndName.age);
    }
}

public class Person
{
    private string name;
    private int age;

    public Person()
    {
        this.name = "No name";
        this.age = 1;
    }

    public Person(int age)
        : this()
    {
        this.age = age;
    }

    public Person(string name, int age)
    {
        this.name = name;
        this.age = age;
    }

    public string Name
    {
        get { return this.name; }
    }

    public int Age
    {
        get { return this.age; }
    }
}