<?php $count = trim(fgets(STDIN)); $line1 = explode(" ", trim(fgets(STDIN))); $line2 = explode(" ", trim(fgets(STDIN))); $number = 0; $ans1 = 0; $ans2 = 0; foreach ($line1 as $key => $value){ if ($line1[$key] != $line2[$key]) { $number = $key; $ans1 = $line1[$key]; $ans2 = $line2[$key]; } } echo $number."\n".$ans1."\n".$ans2;