Let w be a string consisting of lowercase letters. We will call w _beautiful_ if the following condition is satisfied:    * Each lowercase letter of the English alphabet occurs even number of times in w.  You are given the string w. Determine if w is beautiful.
w = 'hthtn'


w = list(w)
w.sort()

isBeautiful = True
length = len(w)
for i in range(0, length, 2):
  if w[i] is not w[i + 1]:
    isBeautiful = False
    break

print('Yes' if isBeautiful else 'No')


def isBeautiful(w):
    w = list(w)
    length = len(w)
    
    if length % 2 != 0:
        return False
    
    w.sort()
    for i in range(0, length, 2):
      if w[i] != w[i + 1]:
        return False
    
    return True

w = input().strip()
 
print('Yes' if isBeautiful(w) else 'No')