Svastikkka

## Read input as specified in the question.
## Print output as specified in the question.
class Node:
    def __init__(self,data):
        self.data=data
        self.next=None


def LinkedLists(arr):
    head=None

Svastikkka

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None

def LinkedLists(arr):
    head=None
    tail=None
    if len(arr)<1:
        return -1

Svastikkka

## Read input as specified in the question.
## Print output as specified in the question.
n=int(input())
arr=sorted(list(map(int,input().split())))
for i in range(len(arr)):
    print(arr[i],end=" ")

Svastikkka

## Read input as specified in the question.
## Print output as specified in the question.
n=int(input())
arr=list(map(int,input().split()))
res=set(arr)
[print(i,end=" ") for i in range(1,n+1) if i not in res]

Svastikkka

arr=list(map(int,input().split()))
res=set(arr[1:])
[print(i,end=" ") for i in range(1,arr[0]+1) if i not in res]

Svastikkka

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None
def LinkedLists(arr):
    head=None
    tail=None
    if len(arr)<1:
        return -1
    else:

Svastikkka

def equilibrium(arr):
    total_sum = sum(arr)
    leftsum = 0
    for i, num in enumerate(arr):
        total_sum -= num
        if leftsum == total_sum:
            return i
        leftsum += num
    return -1
n=int(input())

Svastikkka

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None
def LinkedLists(arr):
    head=None
    tail=None
    for i in arr:
        if i==-1:
            break

Svastikkka

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None
def LinkedLists(arr):
    head=None
    tail=None
    for i in arr:
        if i== -1:
            break

Svastikkka

class Node:
    def __init__(self,data):
        self.data=data
        self.next=None

class LinkedList:
    def __init__(self):
        self.head=None
        self.tail=None
    def inputLL(self,arr):