using System;
using System.Collections;
using System.Collections.Generic;
using System.Linq;
using System.Numerics;
using System.Text;
using System.Threading.Tasks;

namespace _01.Problem
{
    class Program
    {
        static void Main(string[] args)
        {
            int numberOfSnowballs = int.Parse(Console.ReadLine());

            List<Tuple<double, double, BigInteger, double>> listOfValues = new List<Tuple<double, double, BigInteger, double>>();

            for (int i = 0; i < numberOfSnowballs; i++)
            {
                double snowballSnow = double.Parse(Console.ReadLine());
                double snowballTime = double.Parse(Console.ReadLine());
                int snowballQuality = int.Parse(Console.ReadLine());

                BigInteger numberOfThrows = (BigInteger)(snowballSnow / snowballTime);

                BigInteger snowballValue = BigInteger.Pow(numberOfThrows, snowballQuality);

                var tuple4Parts = new Tuple<double, double, BigInteger, double>
                      (snowballSnow, snowballTime, snowballValue, snowballQuality);

                listOfValues.Add(tuple4Parts);
            }

            var highestSnowBallValue = listOfValues.OrderByDescending(x => x.Item3).First();
            Console.WriteLine($"{highestSnowBallValue.Item1} : {highestSnowBallValue.Item2} = {highestSnowBallValue.Item3} ({highestSnowBallValue.Item4})");

        }
    }
}