solucion 10071 volviendo a la fisica de la escuela

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package UVA_Pendientes;

import java.util.Scanner;

/**
 *
 * @author DAM116
 */
public class UVA10071_VueltaFisicaEscuela {
    public static void main(String args[]) {
        Scanner entrada = new Scanner(System.in);
        while (entrada.hasNext()) {
            System.out.println(entrada.nextInt() * entrada.nextInt() * 2);
        }
    }
}