Решение на 08BeerKegs с Java
package Q02DataTypesAndVariables.exersize;
import java.util.Scanner;
public class P08BeerKegs {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);
        int n = Integer.parseInt(scanner.nextLine());
        double previousVolume = 0.0;
        String biggestKeg = "";
        for (int i = 0; i < n; i++) {
            String keg = scanner.nextLine();
            double radius = Double.parseDouble(scanner.nextLine());
            int height = Integer.parseInt(scanner.nextLine());
double currentVolume = Math.PI * radius * radius * height;
            if (currentVolume > previousVolume){
                previousVolume = currentVolume;
                biggestKeg = keg;
            }
        }
        System.out.println(biggestKeg);
    }
}