import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	}
} import java.util.Scanner; Scanner java.util public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	}
} Main public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	} main {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	} Scanner sc = new Scanner(System.in); sc new Scanner(System.in) String N = sc.next(); N sc.next() sc.next sc int sum = 0; sum 0 for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		} int i = 0; int i = 0; i 0 i < N.length() i N.length() N.length N i++ i++ i {
			sum += N.charAt(i)-'0';
		} {
			sum += N.charAt(i)-'0';
		} sum += N.charAt(i)-'0' sum N.charAt(i)-'0' N.charAt(i) N.charAt N i '0' if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		} sum % 9 == 0 sum % 9 sum 9 0 {
			System.out.print("Yes");
		} System.out.print("Yes") System.out.print System.out System System.out "Yes" if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		} sum == 0 sum 0 {
			System.out.print("Yes");
		} System.out.print("Yes") System.out.print System.out System System.out "Yes" {
			System.out.print("No");
		} System.out.print("No") System.out.print 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 N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	}
} public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	}
} Main
import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		String N = sc.next();
		int sum = 0;
		for(int i = 0; i < N.length(); i++) {
			sum += N.charAt(i)-'0';
		}
		if(sum % 9 == 0) {
			System.out.print("Yes");
		}else if(sum == 0){
			System.out.print("Yes");
		}else {
			System.out.print("No");
		}
	}
}
