fun main(args: Array<String>) {
    val w = readLine().orEmpty()
    var result = "Yes"

    var inStr = mutableMapOf<Char, Int>()

    w.forEach{
        if(inStr[it] == null) {
            inStr[it] = 1
        }else{
            inStr[it] = inStr[it]!!.plus(1)
        }
    }
    run loop@{
        inStr.forEach {
            if(it.value % 2 != 0){
                result = "No"
                return@loop
            }
        }
    }

    println(result)

}
