import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	}
} Main public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	} main {
		Scanner sc = new Scanner(System.in);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String string = sc.next(); string sc.next() sc.next sc int ans=0; ans 0 for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		} int i=0; int i=0; i 0 i<string.length() i string.length() string.length string i++ i++ i {
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		} {
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		} ans=ans+Integer.parseInt(string.substring(i,i+1)) ans ans+Integer.parseInt(string.substring(i,i+1)) ans Integer.parseInt(string.substring(i,i+1)) Integer.parseInt Integer string.substring(i,i+1) string.substring string i i+1 i 1 if(ans>=9){ans=ans-9;} ans>=9 ans 9 {ans=ans-9;} ans=ans-9 ans ans-9 ans 9 if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");} ans==0 ans 0 {System.out.println("Yes");} System.out.println("Yes") System.out.println System.out System System.out "Yes" {System.out.println("No");} 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);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==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);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		String string = sc.next();
		int ans=0;
		for(int i=0;i<string.length();i++){
			ans=ans+Integer.parseInt(string.substring(i,i+1));
			if(ans>=9){ans=ans-9;}
		}
		if(ans==0){System.out.println("Yes");}
		else{System.out.println("No");}
	}
}