SnowBall

import java.util.Scanner;

public class Pr11Snowballs {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        byte numberOfSnowballs = Byte.parseByte(scanner.nextLine());
        double bestValue = 0;
        double bestSnowballSnow = 0;
        double bestSnowballTime = 0;
        double bestSnowballQuality = 0;

        for (int i = 0; i < numberOfSnowballs; i++) {
            double snowballSnow = Integer.parseInt(scanner.nextLine());
            double snowballTime = Integer.parseInt(scanner.nextLine());
            double snowballQuality = Integer.parseInt(scanner.nextLine());
            double snowballValue = Math.pow((snowballSnow / snowballTime), snowballQuality);
            if (snowballValue > bestValue) {
                bestValue = snowballValue;
                bestSnowballSnow = snowballSnow;
                bestSnowballTime = snowballTime;
                bestSnowballQuality = snowballQuality;
            }
        }
        System.out.println(String.format("%.0f : %.0f = %.0f (%.0f)",
                bestSnowballSnow, bestSnowballTime, bestValue, bestSnowballQuality));
    }
}