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.

Examples

Input

abaccaba


Output

Yes


Input

hthth


Output

No
#include<bits/stdc++.h>
using namespace std;

int main()
{
    ios_base::sync_with_stdio(0);

    string s;
    cin >> s;
    int x=0;
    int n=s.length();
    for(int i=0;i<n;i++)
        x^=(1<<(s[i]-'a'));
    if(x) puts("No");
    else puts("Yes");

    return 0;
}