Snowballs

using System;
using System.Numerics;

public class Program
{
	public static void Main()
	{
		int snowballs = int.Parse(Console.ReadLine());

		BigInteger highestValue =0;
		int bestSnow =0;
		int bestTime =0;
		int bestQuality =0;

		for (int i=1; i<=snowballs; i++)
		{
			int snowballSnow = int.Parse(Console.ReadLine());
			int snowballTime = int.Parse(Console.ReadLine());
			int snowballQuality = int.Parse(Console.ReadLine());

			BigInteger snowballValue = BigInteger.Pow((snowballSnow/snowballTime),snowballQuality);

			if (snowballValue >highestValue)
			{
				highestValue = snowballValue;
				bestSnow = snowballSnow;
				bestTime = snowballTime;
				bestQuality = snowballQuality;
			}
		}
		Console.WriteLine("{0} : {1} = {2} ({3})",bestSnow,bestTime,highestValue,bestQuality);

	}
}