The famous joke programming language HQ9+ has only 4 commands. In this problem we will explore its subset — a language called HQ...
The only line of the input is a string between 1 and 10<sup class="upper-index">6</sup> characters long.
from collections import Counter

s = list(input())

cnt = Counter(s)

tr = False
for i in cnt.values():
  if i % 2 != 0:
    tr = True
    break
if tr == False:
  print("Yes")
else:
  print("No")
