text: """" input given is a string containing special character character and integers if the no of special character in
  the string is even print the even integers first followed by odd inciters ,vice-versa. eg - input [asdf#$@%23456]
  output [23456] """
  
  
  
  
  
  s = input()
  c = 0
  ans=''
  ev,od=[],[]
  sp = '~`!@#$%^&*()_-+={}[]:;?/>.<,\|'
  for i in s :
      if i in sp :
          c += 1 
      if i.isdigit():
          if int(i) % 2 == 0 :
              ev.append(int(i))
          else :
              od.append(int(i))
  if c % 2 == 0 :
      if len(ev) > len(od) :
          for i in range(len(od)):
              ans += str(ev[i])
              ans += str(od[i])
          for i in ev :
              if str(i) not in ans :
                  ans += str(i)
      elif len(od) > len(ev) :
          for i in range(len(ev)):
              ans += str(ev[i])
              ans += str(od[i])
          for i in od :
              if str(i) not in ans :
                  ans += str(i)
      else :
          for i in range(len(od)):
              ans += str(ev[i])
              ans += str(od[i])
  else :
      if len(ev) > len(od) :
          for i in range(len(od)):
              ans += str(od[i])
              ans += str(ev[i])
          for i in ev :
              if str(i) not in ans :
                  ans += str(i)
      elif len(od) > len(ev) :
          for i in range(len(ev)):
              ans += str(od[i])
              ans += str(ev[i])
          for i in od :
              if str(i) not in ans :
                  ans += str(i)
      else :
          for i in range(len(od)):
              ans += str(od[i])
              ans += str(ev[i])
  
  print(ans)