'use strict'

const stdin = require('fs').readFileSync('/dev/stdin', 'utf8')
const chars = Array.from(stdin.trim())
const count = {}
let flag = true

chars.forEach(char => {
  count[char] = count[char] ? count[char] + 1 : 1
})

for (let c in count) {
  if (count[c] % 2 === 1) {
    flag = false
    break
  }
}

console.log(flag ? 'Yes' : 'No')
