fun main(args: Array<String>) {
	val w = readLine()!!
	val dic = mutableMapOf<Char, Int>()

	var ans = "Yes"

	for (v in w) {
		dic[v] = (dic[v] ?: 0) + 1
	}

	for (v in dic.values) {
		if (v % 2 != 0) {
			ans = "No"
			break
		}
	}
	println(ans)
}
