\begin{problem}{}{.in}{.out}{2 seconds}{256 megabytes}

%Author: 
%Text Author: 

RIGS (Research Institute of Given Strings) is a 

\InputFile

\OutputFile

\Examples

\begin{example}
\exmp{
}{
Case 1: The answer is 239.
Case 2: There is no answer.
}%
\end{example}

\end{problem}
