import java.util.*;

public class Main {
	public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    }
}
 import java.util.*; util.* java public class Main {
	public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    }
} Main public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    } main {
    	Scanner sc = new Scanner(System.in);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    } Scanner sc = new Scanner(System.in); sc new Scanner(System.in) char[] arr = sc.next().toCharArray(); arr sc.next().toCharArray() sc.next().toCharArray sc.next() sc.next sc int sum = 0; sum 0 for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	} char c arr {
    	    sum += c - '0';
    	    sum %= 9;
    	} {
    	    sum += c - '0';
    	    sum %= 9;
    	} sum += c - '0' sum c - '0' c '0' sum %= 9 sum 9 if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	} sum == 0 sum 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);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 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);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    }
} Main
import java.util.*;

public class Main {
	public static void main (String[] args) {
    	Scanner sc = new Scanner(System.in);
    	char[] arr = sc.next().toCharArray();
    	int sum = 0;
    	for (char c : arr) {
    	    sum += c - '0';
    	    sum %= 9;
    	}
    	if (sum == 0) {
    	    System.out.println("Yes");
    	} else {
    	    System.out.println("No");
    	}
    }
}

