{"input":[[2,7,9,3,1]],"expected":12,"label":"Classic: rob 2+9+1=12"}
{"input":[[2,1,1,2]],"expected":4,"label":"rob first+last=2+2=4"}
{"input":[[1,2,3,4,5,6,7,8,9,10]],"expected":30,"label":"1..10: rob 2+4+6+8+10=30"}
{"input":[[200,3,140,20,10]],"expected":350,"label":"rob 200+140+10=350 (indices 0,2,4)"}
