#yuki_342
# coding: utf-8
import re

s = input()
for i in s:
 if s[0]=='ｗ':
  s=s[1:]
if not s:
 print('')
 exit()

l=re.findall(r'[^ｗ]+ｗ+',s)
if not l:
 print('')
 exit()

c=[]
for i in l:
    c.append(i.count('ｗ'))
mc = max(c)
for x,wd in zip(c,l):
 if x==mc:
  print(re.sub(r'ｗ+','',wd))