class LinkedList:
    class Node:
        def __init__(self, val, owner):
            self.val = val
            self.owner = owner
            self.left = None
            self.right = None

    def __init__(self):
        self.head = None
        self.tail = None
        self.size = 0

    def __len__(self):
        return self.size

    def __iter__(self):
        if self.head is None: return
        node = self.head
        while node:
            yield node.val
            node = node.right

    @staticmethod
    def _connect(a: Node, b: Node):
        """a と b を接合する"""
        a.right = b
        b.left = a

    def append(self, val) -> Node:
        node = LinkedList.Node(val, self)
        if self.head is None:
            self.head = self.tail = node
        else:
            LinkedList._connect(self.tail, node)
            self.tail = node

        self.size += 1
        return node

    def appendleft(self, val) -> Node:
        node = LinkedList.Node(val, self)
        if self.head is None:
            self.head = self.tail = node
        else:
            LinkedList._connect(node, self.head)
            self.head = node

        self.size += 1
        return node

    def remove(self, node: Node):
        assert node is not None and node.owner is self
        assert self.size > 0

        if node is self.head:
            self.head = self.head.right
            if self.head:
                self.head.left = None
        elif node is self.tail:
            self.tail = self.tail.left
            if self.tail:
                self.tail.right = None
        else:
            left = node.left
            right = node.right
            left.right = right
            right.left = left

        self.size -= 1


N = int(input())
P = list(map(lambda x: int(x)-1, input().split()))

p2node = {}
ll = LinkedList()
for p in P:
    node = ll.append(p)
    p2node[p] = node

used = set()
ans = []
for i in range(N):
    if i in used: continue
    node = p2node[i]
    if node.right is None: continue

    ans.append(node.val)
    ans.append(node.right.val)
    ll.remove(node)
    ll.remove(node.right)
    used.add(ans[-1])
    used.add(ans[-2])


print(*[x+1 for x in ans])