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.
from collections import Counter
w=str(input())
li=Counter(w)
for i in range(len(w)):
    word=w[i]
    if i==len(w)-1:
        if li[word] % 2 == 0:
            print('YES')
            break
        else:
            print('NO')
            break
    if li[word]%2==0:
        continue
    else:
        print('NO')
        break

from collections import Counter
w=str(input())
li=Counter(w)
for i in range(len(w)):
    word=w[i]
    if i==len(w)-1:
        if li[word] % 2 == 0:
            print('Yes')
            break
        else:
            print('No')
            break
    if li[word]%2==0:
        continue
    else:
        print('No')
        break