using System;
using System.Numerics;

namespace Snowballs
{
    class Program
    {
        static void Main(string[] args)
        {
            int snowBallCount = int.Parse(Console.ReadLine());
            BigInteger snowBallValue = new BigInteger(0);
            BigInteger higestSnValue = new BigInteger(0);
            int bestSnSnow = 0;
            int bestSnTime = 0;
            int bestSnQual = 0;

            for (int i = snowBallCount - 1; i >= 0; i--)
            {

                    int snowballSnow = int.Parse(Console.ReadLine());
                    int snowballTime = int.Parse(Console.ReadLine());
                    int snowballQuality = int.Parse(Console.ReadLine());

                   if (snowballTime != 0)
                   {
                        snowBallValue = BigInteger.Pow((snowballSnow / snowballTime), snowballQuality);

                        if (snowBallValue > higestSnValue)
                        {

                         higestSnValue = snowBallValue;
                         bestSnSnow = snowballSnow;
                         bestSnTime = snowballTime;
                         bestSnQual = snowballQuality;

                        }
                   }

            }

            Console.WriteLine($"{bestSnSnow} : {bestSnTime} = {higestSnValue:F0} ({bestSnQual})");

        }
    }
}