import java.util.Scanner;
import java.math.BigInteger;

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

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        BigInteger n = sc.nextBigInteger();
        BigInteger r = n.mod(BigInteger.valueOf(9));
        if(r.equals(BigInteger.valueOf(0))) {
            System.out.println("Yes");
        } else {
            System.out.println("No");
        }
    }
}
