function myout(text){console.log(text);}//standard output
function Main(input) {
	//input = parseInt(input);
	//input = input.trim().split(" ");
	//input = input.trim().split("\n");
	//input = input.trim().split(" ").map((a)=>Number(a));
	//input = input.trim().split("\n").map((a)=>Number(a));
  var list = {};
  var list2 = [];
  for(var i = 0; i < input.length; i++){
    var tmp = input.slice(i,i+1);
    if(list[tmp] == null){
       list[tmp] = 1;
      list2.push(tmp);
    }else{
       list[tmp]++;
    }
  }
  for(var i = 0; i < list2.length; i++){
    if(list[list2[i]] % 2 == 1){
       myout("No");
      return;
       }
  }
  myout("Yes");
}

Main(require("fs").readFileSync("/dev/stdin", "utf8").trim());
