Ето едно решение на C#, дано ти е полезно.
Линк

Май е заради типа на данните.
Успех

Ето едно и на Python.

https://pastebin.com/VwUQGSKt

java

package Fundamentals;

import java.util.Scanner;

public class Snowballs_11 {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

        //

        int snowball = Integer.parseInt(scanner.nextLine());//брой

        double snowballValue = 0;
        int snowbllSnow1 = 0;
        int snowbllTime1 = 0;
        int snowbllQuality1 = 0;

        for (int ball = 1; ball <= snowball; ball++) {

            int snowballSnow = Integer.parseInt(scanner.nextLine());//снежна
            int snowballTime = Integer.parseInt(scanner.nextLine());//време
            int snowballQuality = Integer.parseInt(scanner.nextLine());//качество

            double result = Math.pow(snowballSnow * 1.0 / snowballTime, snowballQuality);

            if (result > snowballValue) {
                snowballValue = result;
                snowbllSnow1 = snowballSnow;
                snowbllTime1 = snowballTime;
                snowbllQuality1 = snowballQuality;
            }

        }
        System.out.printf("%d : %d = %.0f (%d)",snowbllSnow1,snowbllTime1,snowballValue,snowbllQuality1);
    }
}