import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    }

    static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    }
}
 import java.io.OutputStream; OutputStream java.io import java.io.IOException; IOException java.io import java.io.InputStream; InputStream java.io import java.io.PrintWriter; PrintWriter java.io import java.util.StringTokenizer; StringTokenizer java.util import java.io.IOException; IOException java.io import java.io.BufferedReader; BufferedReader java.io import java.io.InputStreamReader; InputStreamReader java.io import java.io.InputStream; InputStream java.io public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    }

    static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    }
} Main public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    } main {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    } InputStream inputStream = System.in; inputStream System.in System System.in OutputStream outputStream = System.out; outputStream System.out System System.out InputReader in = new InputReader(inputStream); in new InputReader(inputStream) PrintWriter out = new PrintWriter(outputStream); out new PrintWriter(outputStream) BMultipleOf9 solver = new BMultipleOf9(); solver new BMultipleOf9() solver.solve(1, in, out) solver.solve solver 1 in out out.close() out.close out String[] args args static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    } BMultipleOf9 public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        } solve {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        } int[] s = in.readDigits(); s in.readDigits() in.readDigits in int sum = 0; sum 0 for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            } int x s {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            } {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            } sum += x sum x while (sum >= 9)
                    sum -= 9; sum >= 9 sum 9 sum -= 9 sum 9 out.println(sum == 0 ? "Yes" : "No") out.println out sum == 0 ? "Yes" : "No" sum == 0 sum 0 "Yes" "No" int testNumber testNumber InputReader in in PrintWriter out out static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    } InputReader public final BufferedReader reader; reader public StringTokenizer tokenizer; tokenizer public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } InputReader {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        } reader = new BufferedReader(new InputStreamReader(stream), 32768) reader new BufferedReader(new InputStreamReader(stream), 32768) tokenizer = null tokenizer null InputStream stream stream public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } next {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        } while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } tokenizer == null || !tokenizer.hasMoreTokens() tokenizer == null tokenizer null !tokenizer.hasMoreTokens() tokenizer.hasMoreTokens() tokenizer.hasMoreTokens tokenizer {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            } try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } catch (IOException e) {
                    throw new RuntimeException(e);
                } IOException e {
                    throw new RuntimeException(e);
                } throw new RuntimeException(e); new RuntimeException(e) {
                    tokenizer = new StringTokenizer(reader.readLine());
                } tokenizer = new StringTokenizer(reader.readLine()) tokenizer new StringTokenizer(reader.readLine()) return tokenizer.nextToken(); tokenizer.nextToken() tokenizer.nextToken tokenizer public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        } readDigits {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        } char[] chars = next().toCharArray(); chars next().toCharArray() next().toCharArray next() next int[] x = new int[chars.length]; x new int[chars.length] chars.length chars chars.length for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            } int i = 0; int i = 0; i 0 i < x.length i x.length x x.length i++ i++ i {
                x[i] = chars[i] - '0';
            } {
                x[i] = chars[i] - '0';
            } x[i] = chars[i] - '0' x[i] x i chars[i] - '0' chars[i] chars i '0' return x; x public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    }

    static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    }
} public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    }

    static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    }
} Main
import java.io.OutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.PrintWriter;
import java.util.StringTokenizer;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.InputStream;

/**
 * Built using CHelper plug-in
 * Actual solution is at the top
 */
public class Main {
    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        InputReader in = new InputReader(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        BMultipleOf9 solver = new BMultipleOf9();
        solver.solve(1, in, out);
        out.close();
    }

    static class BMultipleOf9 {
        public void solve(int testNumber, InputReader in, PrintWriter out) {
            int[] s = in.readDigits();
            int sum = 0;
            for (int x : s) {
                sum += x;
                while (sum >= 9)
                    sum -= 9;
            }

            out.println(sum == 0 ? "Yes" : "No");
        }

    }

    static class InputReader {
        public final BufferedReader reader;
        public StringTokenizer tokenizer;

        public InputReader(InputStream stream) {
            reader = new BufferedReader(new InputStreamReader(stream), 32768);
            tokenizer = null;
        }

        public String next() {
            while (tokenizer == null || !tokenizer.hasMoreTokens()) {
                try {
                    tokenizer = new StringTokenizer(reader.readLine());
                } catch (IOException e) {
                    throw new RuntimeException(e);
                }
            }
            return tokenizer.nextToken();
        }

        public int[] readDigits() {
            char[] chars = next().toCharArray();
            int[] x = new int[chars.length];
            for (int i = 0; i < x.length; i++) {
                x[i] = chars[i] - '0';
            }
            return x;
        }

    }
}

