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 JavaScript (node.js v5.12) (judge verdict: Wrong Answer)

'use strict';

const lines = require("fs").readFileSync("/dev/stdin", "utf8").split("");

let answer = "Yes"+"\n";

if (lines.length % 2 == 0) {
  for (let i = 0; i < lines.length; i++) {
    let count = 0;
    lines.forEach(num => {
      if (lines[i] == num) {
        count++;
      }
    });
    if (count % 2 != 0) {
      answer = "No";
      break;
    }
  }
} else {
  answer = "No";
}
console.log(answer);