'use strict'

const main = input => {
	const args = input.split('\n').map(arg => arg.split(' '))
	const w = args[0][0]
	const cnt = {}

	for (let i = 0; i < w.length; i++) {
		if (!(w[i] in cnt)) cnt[w[i]] = 0
		cnt[w[i]]++
	}

	const keys = Object.keys(cnt)
	let ans = true

	for (let i = 0; i < keys.length; i++) {
		if (cnt[keys[i]] % 2 === 1) ans = false
	}

	console.log(ans ? 'Yes' : 'No')
}

main(require('fs').readFileSync('/dev/stdin', 'utf8'))
