import java.util.*;
import java.math.*;;
public class Main{
  public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    }
} import java.util.*; util.* java import java.math.*; math.* java public class Main{
  public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    }
} Main public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    } main {
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) BigInteger num = sc.nextBigInteger(); num sc.nextBigInteger() sc.nextBigInteger sc if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No"); num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0 num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) num.mod(new BigInteger("9")).compareTo num.mod(new BigInteger("9")) num.mod num new BigInteger("9") new BigInteger("0") 0 System.out.println("Yes") System.out.println System.out System System.out "Yes" System.out.println("No") System.out.println System.out System System.out "No" String[] args args public class Main{
  public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    }
} public class Main{
  public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    }
} Main
import java.util.*;
import java.math.*;;
public class Main{
  public static void main(String[] args){
    	Scanner sc = new Scanner(System.in);
    	BigInteger num = sc.nextBigInteger();
    	if (num.mod(new BigInteger("9")).compareTo(new BigInteger("0")) == 0)
          System.out.println("Yes");
    	else
          System.out.println("No");
    }
}