<?php
solve1();
// walk();

// 自力解
function solve1(){
	$n = (int)trim(fgets(STDIN));

	$list = [];
	for ($i=0; $i < $n; $i++) { 
		$node = new BTreeNode($i+1);
		$list[$node->getId()] = $node;
	}
	$preorder = [];
	$input = explode(' ', trim(fgets(STDIN)));
	for ($i=0; $i < $n; $i++) { 
		$preorder[] = (int)$input[$i];
	}
	$inorder = [];
	$input = explode(' ', trim(fgets(STDIN)));
	for ($i=0; $i < $n; $i++) { 
		$inorder[] = (int)$input[$i];
	}
	$end = $n;
	dfs($preorder, $inorder, $list, $preorder[0]);
	$res = [];
	$res = postorderWalk($list, $preorder[0], $res);
	echo implode(' ', $res) . PHP_EOL;
}

function dfs($preorder, $inorder, $list, $p){
	$children = getChildren($inorder, $p);
	if (count($children['left']) === 1) {
		$list[$p]->setLeft($children['left'][0]);
		$list[$children['left'][0]]->setParentId($p);
	}elseif(count($children['left']) > 1){
		$p_left = null;
		foreach ($preorder as $pre) {
			if (in_array($pre, $children['left'])) {
				$p_left = $pre;
				break;
			}
		}
		$list[$p]->setLeft($p_left);
		$list[$p_left]->setParentId($p);
		dfs($preorder, $children['left'], $list, $p_left);
	}

	if (count($children['right']) === 1) {
		$list[$p]->setRight($children['right'][0]);
		$list[$children['right'][0]]->setParentId($p);
	}elseif(count($children['right']) > 1){
		$p_right = null;
		foreach ($preorder as $pre) {
			if (in_array($pre, $children['right'])) {
				$p_right = $pre;
				break;
			}
		}
		$list[$p]->setRight($p_right);
		$list[$p_right]->setParentId($p);
		dfs($preorder, $children['right'], $list, $p_right);
	}
}

function getChildren($inorder, $p){
	$n = count($inorder);
	$left = [];
	$right = [];
	$r_flg = false;
	for ($i=0; $i < $n; $i++) { 
		if ($inorder[$i] === $p) {
			$r_flg = true;
		}else{
			if ($r_flg) {
				$right[] = $inorder[$i];
			}else{
				$left[] = $inorder[$i];
			}
		}
	}
	return [
		'left' => $left,
		'right' => $right,
	];
}
// function dfs($list, $id, $depth){
// 	$list[$id]->setDepth($depth);
// 	++$depth;
// 	$height = 0;
// 	if($list[$id]->hasChild()){
// 		$children = $list[$id]->getChildren();
// 		foreach ($children as $c) {
// 			$h = dfs($list, $c, $depth);
// 			$height = max($height, $h);
// 		}
// 	}
// 	$list[$id]->setHeight($height);
// 	return ++$height;
// }

// function walk(){
// 	$n = (int)trim(fgets(STDIN));

// 	$list = [];
// 	for ($i=0; $i < $n; $i++) { 
// 		$node = new BTreeNode($i);
// 		$list[$node->getId()] = $node;
// 	}
// 	for ($i=0; $i < $n; $i++) { 
// 		$input = explode(' ', trim(fgets(STDIN)));
// 		$id = (int)$input[0];
// 		$list[$id]->setLeft((int)$input[1]);
// 		if (isset($list[(int)$input[1]])) {
// 			$list[(int)$input[1]]->setParentId($id);
// 		}
// 		$list[$id]->setRight((int)$input[2]);
// 		if (isset($list[(int)$input[2]])) {
// 			$list[(int)$input[2]]->setParentId($id);
// 		}
// 	}
// 	for ($i=0; $i < $n; $i++) { 
// 		if ($list[$i]->getParentId() === -1) {
// 			// root
// 			$curId = $i;
// 			break;
// 		}
// 	}
// 	echo 'Preorder' . PHP_EOL;
// 	preorderWalk($list, $curId);
// 	echo PHP_EOL;

// 	echo 'Inorder' . PHP_EOL;
// 	inorderWalk($list, $curId);
// 	echo PHP_EOL;

// 	echo 'Postorder' . PHP_EOL;
// 	postorderWalk($list, $curId);
// 	echo PHP_EOL;

// }


function preorderWalk($list, $id){
	echo ' ' . $id;
	if ($list[$id]->hasLeft()) {
		preorderWalk($list, $list[$id]->getLeft());
	}
	if ($list[$id]->hasRight()) {
		preorderWalk($list, $list[$id]->getRight());
	}
}

function inorderWalk($list, $id){
	if ($list[$id]->hasLeft()) {
		inorderWalk($list, $list[$id]->getLeft());
	}
	echo ' ' . $id;
	if ($list[$id]->hasRight()) {
		inorderWalk($list, $list[$id]->getRight());
	}
}
function postorderWalk($list, $id, $result){
	if ($list[$id]->hasLeft()) {
		$result = postorderWalk($list, $list[$id]->getLeft(), $result);
	}
	if ($list[$id]->hasRight()) {
		$result = postorderWalk($list, $list[$id]->getRight(), $result);
	}
	$result[] = $id;
	return $result;
}

class BTreeNode
{
	private $id;
	private $depth = 0;
	private $height = 0;
	private $parent_id = -1;
	private $left = -1;
	private $right = -1;

	function __construct($id)
	{
		$this->id = $id;
	}
	function setParentId($p_id){
		$this->parent_id = $p_id;
	}
	function setLeft($l_id){
		$this->left = $l_id;
	}
	function setRight($r_id){
		$this->right = $r_id;
	}
	function getId(){
		return $this->id;
	}
	function getParentId(){
		return $this->parent_id;
	}
	function getLeft(){
		return $this->left;
	}
	function getRight(){
		return $this->right;
	}
	function hasChild(){
		return ($this->left !== -1) || ($this->right !== -1);
	}
	function getChildren(){
		$children = [];
		if ($this->hasLeft()) {
			$children[] = $this->left;
		}
		if ($this->hasRight()) {
			$children[] = $this->right;
		}
		return $children;
	}
	function getAnotherChild($c_id){
		$c = -1;
		if ($this->getLeft() === $c_id) {
			$c = $this->getRight();
		}elseif ($this->getRight() === $c_id) {
			$c = $this->getLeft();
		}
		return $c;
	}
	function hasLeft(){
		return $this->left !== -1;
	}
	function hasRight(){
		return $this->right !== -1;
	}
	function setDepth($d){
		$this->depth = $d;
	}
	function addDepth(){
		$this->depth += 1;
	}
	function getDepth(){
		return $this->depth;
	}
	function setHeight($h){
		$this->height = $h;
	}
	function getHeight(){
		return $this->height;
	}
}


Measured memory_bytes: 9528