import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	}

} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	}

} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	} main {
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) StringBuilder sb = new StringBuilder(); sb new StringBuilder() String s = sc.next(); s sc.next() sc.next sc sb.append(s) sb.append sb s while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		} true {
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		} int i = sb.indexOf(sb.substring(0, 1),1); i sb.indexOf(sb.substring(0, 1),1) sb.indexOf sb sb.substring(0, 1) sb.substring sb 0 1 1 if(i==-1){
				System.out.println("No");
				break;
			} i==-1 i -1 1 {
				System.out.println("No");
				break;
			} System.out.println("No") System.out.println System.out System System.out "No" break; sb.deleteCharAt(i) sb.deleteCharAt sb i sb.deleteCharAt(0) sb.deleteCharAt sb 0 if(sb.length()==0){
				System.out.println("Yes");
				break;
			} sb.length()==0 sb.length() sb.length sb 0 {
				System.out.println("Yes");
				break;
			} System.out.println("Yes") System.out.println System.out System System.out "Yes" break; String[] args args public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	}

} public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	}

} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		StringBuilder sb = new StringBuilder();
		String s = sc.next();
		sb.append(s);
		
		while(true){
			int i = sb.indexOf(sb.substring(0, 1),1);
			if(i==-1){
				System.out.println("No");
				break;
			}
			sb.deleteCharAt(i);
			sb.deleteCharAt(0);
			if(sb.length()==0){
				System.out.println("Yes");
				break;
			}
		}
		
	}

}