Bug in Datagen for problem 2519

[roboterosuaa]

I'm trying to use Datagen tool for problem 2519 and I get this message either in Model Solution or in Custom Solution:

:4: error: class Postfix is public, should be declared in a file named Postfix.java
public class Postfix {
^
Note: uses unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
1 error

I've used Datagen for other problems and it's been working well.

Thanks.

[HaZard]

no es el unico hay otros ejercicios que dan errores como Time Limited Exceeded con el ejemplo de entrada y salida

[rvargas]

Los que dan TLE casi siempre es cuando la entrada espera EOF.