1. while 1:
  2. try:

  3.     n=input()

  4. except:

  5.     break

  6. tx,ty=[],[]

  7. for i in range(int(n)):

  8.     x,y=map(int,input().split())

  9.     tx.append(x)

  10.     ty.append(y)

  11. mx=max(max(tx)-min(tx),max(ty)-min(ty))**2

  12. print(mx)