process.stdin.resume();
process.stdin.setEncoding('utf8');

var lines = [];
var reader = require('readline').createInterface({
  input: process.stdin,
  output: process.stdout
});
reader.on('line', (line) => {
  lines.push(line);
});
reader.on('close', () => {
    const list = lines[0].split("");
    const map = {};
    list.forEach(v=>{
        map[v] = (map[v]||0)+1;
    });
    let flg = true;
    Object.keys(map).forEach(key=>{
        if(map[key]%2===1)flg = false;
    });
    console.log(flg?"Yes":"No");
    
});
