其它
Adam built fewer sandcastles than Martin but more than Susan. Lucy built more sandcastles than Adam and more than Martin. Dana built more sancastles than Martin but fewer than Lucy.  Who of them built the most sandcastles? 
Overseas Competition->Knowledge Point->Combinatorics->Logical Reasoning
L \textgreater{} D\textgreater{} M \textgreater{} A \textgreater{} S 