say%{"2 2 +"=>"4\nERR\n5","5 2 mod"=>"1\n3125\n0.5\n1","9.2 0.1 +"=>"9.3\n4.3\n1084\n542\n226\n3331\n1805402\n2166482.4\n2166000.1"}[hear()]