def solve():
 n= int(input())
 x=int(input())
 if n< -10 or 10**5 or x< -10:
 printf(\"Invalid input\")
 return
 arr=[]
 for_in range(n):
 arr. append(int(input()))
 arr.append(x)
 arr.sort()
 print(*arr)
 solve()