package P09;

import java.util.Scanner;

public class E11_Snowballs {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);

        int N = Integer.parseInt(in.nextLine());
        double snowballValue = 0;
        int snowballSnowWin = 0;
        int snowballTimeWin = 0;
        int snowballQualityWin = 0;

        for (int i = 1; i <= N ; i++) {
            int snowballSnow = Integer.parseInt(in.nextLine());
            int snowballTime  = Integer.parseInt(in.nextLine());
            int snowballQuality = Integer.parseInt(in.nextLine());

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

            if(snowballValueCurrent>=snowballValue){
                snowballValue = snowballValueCurrent;
                snowballSnowWin = snowballSnow ;
                snowballTimeWin = snowballTime;
                snowballQualityWin = snowballQuality;
            }

        }

        System.out.printf("%d : %d = %.0f (%d)",
                snowballSnowWin,
                snowballTimeWin,
                snowballValue,
                snowballQualityWin
                );
    }
}