/*Tony and Andi love playing in the snow and having snowball
 fights, but they always argue who makes the best snowballs.
 They have decided to involve you in their fray, by making
 you write a program which calculates snowball data, and
 outputs the best snowball value.

You will receive N – an integer, the number of snowballs
being made by Tony and Andi.
For each snowball you will receive 3 input lines:
    • On the first line you will get the
    snowballSnow – an integer.
    • On the second line you will get the
    snowballTime – an integer.
    • On the third line you will get the
    snowballQuality – an integer.
For each snowball you must calculate its
snowballValue by the following formula:
(snowballSnow / snowballTime) ^ snowballQuality
At the end you must print the highest calculated
snowballValue.

Input
    • On the first input line you will receive N –
    the number of snowballs.
    • On the next N * 3 input lines you will be receiving
    data about snowballs.
Output
    • As output you must print the highest calculated
    snowballValue, by the formula, specified above.
    • The output format is:
{snowballSnow} : {snowballTime} = {snowballValue} ({snowballQuality})

Constraints:
    • The number of snowballs (N) will be an integer in
    range [0, 100].
    • The snowballSnow is an integer in range [0, 1000].
    • The snowballTime is an integer in range [1, 500].
    • The snowballQuality is an integer in range [0, 100].
    • Allowed working time / memory: 100ms / 16MB.
_________________________________________________________
Input                            Output
2                            10 : 2 = 125 (3)
10
2
3
5
5
5
_________________________________________________________
3                            10 : 5 = 128 (7)
10
5
7
16
4
2
20
2
2
_________________________________________________________
*/
using System;
using System.Numerics;

namespace _11Snowballs
{
    class Program
    {
        static void Main(string[] args)
        {
            int numberSnowballs = int.Parse(Console.ReadLine());
            BigInteger bestValue = 0;
            int bestSnow = 0;
            int bestTime = 0;
            int bestQuality = 0;
            for (int i = 0; i < numberSnowballs; i++)
            {
                int snowballSnow = int.Parse(Console.ReadLine());
                int snowballTime = int.Parse(Console.ReadLine());
                int snowballQuality = int.Parse(Console.ReadLine());
                if (snowballTime > 0)
                {
                    BigInteger snowballValue = BigInteger.Pow(snowballSnow / snowballTime, snowballQuality);
                    if (bestValue <= snowballValue)
                    {
                        bestSnow = snowballSnow;
                        bestTime = snowballTime;
                        bestQuality = snowballQuality;
                        bestValue = snowballValue;
                    }
                }
            }
            Console.WriteLine($"{bestSnow} : {bestTime} = {bestValue} ({bestQuality})");
        }
    }
}