Vasya is very upset that many people on the Net mix uppercase and lowercase letters in one word. That's why he decided to invent an extension for his favorite browser that would change the letters' register in every word so that it either only consisted of lowercase letters or, vice versa, only of uppercase ones. At that as little as possible letters should be changed in the word. For example, the word HoUse must be replaced with house, and the word ViP — with VIP. If a word contains an equal number of uppercase and lowercase letters, you should replace all the letters with lowercase ones. For example, maTRIx should be replaced by matrix. Your task is to use the given method on one given word.

Input

The first line contains a word s — it consists of uppercase and lowercase Latin letters and possesses the length from 1 to 100.

Output

Print the corrected word s. If the given word s has strictly more uppercase letters, make the word written in the uppercase register, otherwise - in the lowercase one.

Examples

Input

HoUse


Output

house


Input

ViP


Output

VIP


Input

maTRIx


Output

matrix


stdin_flag=1
if not stdin_flag:
  read_line_index=0
  testcasefilename="test.txt"
  Stestcase=open(testcasefilename).read()
  read_line_datas=Stestcase.split("\n")


def debugs(s):
  if not stdin_flag:
    print ";;;",s

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######################################

def read_line():
  global read_line_index
  if stdin_flag:
    return raw_input()
  else:
    s=read_line_datas[read_line_index]
    read_line_index+=1
    return s

def answer():
  if stdin_flag:
    return solve()
  else:
    while read_line_proceed():
      solve()
      

def read_line_proceed():
  global read_line_index
  print"##################"
  while 1:
    if read_line_index>= len (read_line_datas ):
      return False
    if read_line_datas[read_line_index]=="%%%":
      read_line_index+=1
      return True
    read_line_index+=1


def readint():
  return int (read_line() )


def readints():
  return map(int, read_line().split(" "))

def reads():
  return read_line()




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def compute(m,n,d):
  pass

def solve():
  s=reads()
  if sum('A'<=i<='Z' for i in s)*2>len(s):
    print s.upper()
  else:
    print s.lower()

def test():
  pass

test()
answer()
