using System;
using System.Collections.Generic;
using System.Linq;

public class Program {
    public static List<int> NumbersFromString(string input, char delimitor = ' ') {
        return input.Split( delimitor ).ToList<string>().ConvertAll<int>( int.Parse );
    }

    private static List<int> NumbersFromConsole(char delimitor = ' ') {
        return NumbersFromString( Console.ReadLine() );
    }

    private struct Bro {
        public string Name { get; set; }
        public int Height { get; set; }
    }

    private static void Main() {
        var Bros = new List<Bro>()
        {
            new Bro()
            {
                Name = "A",
                Height = int.Parse( s: Console.ReadLine())
            },
            new Bro()
            {
                Name = "B",
                Height=int.Parse( s: Console.ReadLine())
            },
            new Bro()
            {
                Name = "C",
                Height=int.Parse( s: Console.ReadLine())
            }
        };
        var BrosSorted = Bros.OrderByDescending( x => x.Height );
        foreach (var i in BrosSorted) {
            Console.WriteLine(i.Name);
        }
    }
}