using System;

namespace Snowballs
{
    class Program
    {
        static void Main(string[] args)
        {
            byte number = byte.Parse(Console.ReadLine());
            int snowballSnow = 0;
            int snowballTime = 0;
            int snowballQuality = 0;
            int greatSnowballSnow = 0;
            int greatSnowballTime = 0;
            int greatSnowballQuality = 0;
            ulong snowballValue = 0;

            for (int i = 1; i <= number ; i++)
            {
                snowballSnow = int.Parse(Console.ReadLine());
                snowballTime = int.Parse(Console.ReadLine());
                snowballQuality = int.Parse(Console.ReadLine());
                int currentValue = snowballSnow / snowballTime;
                double powCurrentValue = Math.Pow(currentValue, snowballQuality);

                if (powCurrentValue >= snowballValue)
                {
                    snowballValue = (ulong)powCurrentValue;
                    greatSnowballSnow = snowballSnow;
                    greatSnowballTime = snowballTime;
                    greatSnowballQuality = snowballQuality;
                }

            }

            Console.WriteLine($"{greatSnowballSnow} : {greatSnowballTime} = {snowballValue} ({greatSnowballQuality})");
        }
    }
}