import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String S=sc.next();
		int tmp=0;
      	String ttt;
		for(int i=1;i<9;i++){
          	ttt = String.valueOf(i);;
			tmp+=i*(S.length() - S.replace(ttt,"").length());
		}
		if(tmp%9==0){
			System.out.println("Yes");
        }else{
			System.out.println("No");
		}
	}
}
/tmp/hf-datasets-cache/medium/datasets/42704881117311-config-parquet-and-info-qiankunmu-Project_CodeNet-896c9d36/hub/datasets--qiankunmu--Project_CodeNet_Python800_and_Java250/snapshots/c899fde44a77ba1cc14973ed3de064e4ff3aadc7/Project_CodeNet_Java250.tar.gz