package Ġurl short en service Ċ Ċ interface ĠShort en Url Service Ġ{ ĊĠ Ġfun Ġshort en ( long Url : ĠString Ġ= Ġ" https :// en . wikipedia . org / wiki / Cache _ replacement _ policies # Last _ in _ first _ out _( LI FO ) "): ĠString Ċ }