import std.algorithm;
import std.array;
import std.conv;
import std.math;
import std.range;
import std.stdio;
import std.string;
import std.typecons;

T read(T)() { return readln.chomp.to!T; }
T[] reads(T)() { return readln.split.to!(T[]); }
alias readint = read!int;
alias readints = reads!int;

bool calc(string s) {
    int[char] d;
    foreach (c; s) {
        d[c]++;
    }
    return d.values.all!(e => e % 2 == 0);
}

void main() {
    auto s = read!string;
    writeln(calc(s) ? "Yes" : "No");
}
