Problem:
Score : 200 points

Problem Statement

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.

Constraints

1 \leq |w| \leq 100

w consists of lowercase letters (a-z).

Input

The input is given from Standard Input in the following format:

w

Output

Print Yes if w is beautiful. Print No otherwise.

Sample Input 1

abaccaba

Sample Output 1

Yes

a occurs four times, b occurs twice, c occurs twice and the other letters occur zero times.

Sample Input 2

hthth

Sample Output 2

No

Solution in PyPy3 (2.4.0) (judge verdict: Accepted)

w = input()
n = len(w)

chrs = [chr(i) for i in range(97, 97+26)]
lis = [0]*26

for i in range(26):
  tmp = w.count(chrs[i])
  lis[i] = tmp

for i in range(26):
  if lis[i]%2!=0:
    print("No")
    exit()
print("Yes")