Drazil Varda earthworm couple they want find good place bring child they find good ground contain nature hole the hole contain room pair room connect small tunnel earthworm themlets consider room small tunnel vertex edge graph this graph tree in word pair vertex unique path themeach room leaf graph connect ground vertical tunnel here leaf vertex outgoing edge graphEach room large fit earthworm live Earthworm can not live tunnelDrazil Varda plan educate child they want child morning exercise immediately get upWhen morning come earthworm child time choose farth path ground gather child lazy want exercise late possibleDrazil Varda want difference time earthworm child arrive outside time earthworm child arrive outside large l child spread ground hard exercise togetheralso the room occupy child form connect set in word room occupy earthworm child room lie path occupy earthworm child toohow child Drazil Varda order satisfy condition Drazil Varda want know answer different choice lDrazil Varda do not live hole child