package Exercise1002;

import java.util.Scanner;

public class Exercise1002 {

    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        int snowballCount = Integer.parseInt(scanner.nextLine());

        double maxValue = 0.0;
        int bestSnow = 0;
        int bestTime =0;
        int bestQuality=0;

        while ( snowballCount -->0){

            int snowballSnow = Integer.parseInt(scanner.nextLine());
            int snowballTime = Integer.parseInt(scanner.nextLine());
            int snowballQuality = Integer.parseInt(scanner.nextLine());

           double snowballValue = Math.pow((snowballSnow / snowballTime) , snowballQuality);

           if (snowballValue > maxValue){
               maxValue= snowballValue;
               bestSnow=snowballSnow;
               bestTime=snowballTime;
               bestQuality=snowballQuality;


           }


        }

        System.out.printf("%d : %d = %.0f (%d)",bestSnow,bestTime,maxValue,bestQuality);

    }
}