public static void Main()
{
int num = int.Parse(Console.ReadLine());
List <Person> persons = new List <Person>();
for (int i = 0; i < num; i++)
{
string[] current = Console.ReadLine().Split();
Person holder = new Person();
holder.Name = current[0];
holder.Age = int.Parse(current[1]);
persons.Add(holder);
}
Person.Above30(persons);
}
