static void Main(string[] args)
{
var n = int.Parse(Console.ReadLine());
var family = new Family();
for (int i = 0; i < n; i++)
{
var input = Console.ReadLine().Split();
var name = input[0];
var age = int.Parse(input[1]);
var person = new Person(name, age);
family.AddMember(person);
}
var olderThan30 = family.GetMembersOlderThan30().OrderBy(x => x.Name);
Console.WriteLine(string.Join(Environment.NewLine,
olderThan30));
}