n=(input())

def CheckSum(n):
  evenSum=0
  oddSum=0
  l=list(n)
  for i in range(len(l)):
    if int(l[i])%2==0:
      evenSum=evenSum+1 
    else:
      oddSum=oddSum+1 
  
  if evenSum==oddSum:
    return "True"
  else:
    return "False"
    

print(CheckSum(n))