'use strict'
function Main(input) {
  input = input.split('\n')[0].split('');
  const returnObj = input.reduce((a, e) => {
    if (a[e]) {
      ++a[e];
    } else {
      a[e] = 1;
    }
    return a;
  }, {});
  
  let result = 'Yes';
  for (let key in returnObj) {
    if (returnObj[key] % 2 !== 0) {
      result = 'No';
      break;
    }
  }
  console.log(result);
}

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