Mancala is a game famous in the Middle East. It is played on a board that consists of 14 holes. 

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Initially, each hole has a_i stones. When a player makes a move, he chooses a hole which contains a positive number of stones. He takes all the stones inside it and then redistributes these stones one by one in the next holes in a counter-clockwise direction.

Note that the counter-clockwise order means if the player takes the stones from hole i, he will put one stone in the (i+1)-th hole, then in the (i+2)-th, etc. If he puts a stone in the 14-th hole, the next one will be put in the first hole.

After the move, the player collects all the stones from holes that contain even number of stones. The number of stones collected by player is the score, according to Resli.

Resli is a famous Mancala player. He wants to know the maximum score he can obtain after one move.

Input

The only line contains 14 integers a_1, a_2, …, a_{14} (0 ≤ a_i ≤ 10^9) — the number of stones in each hole.

It is guaranteed that for any i (1≤ i ≤ 14) a_i is either zero or odd, and there is at least one stone in the board.

Output

Output one integer, the maximum possible score after one move.

Examples

Input

0 1 1 0 0 0 0 0 0 7 0 0 0 0


Output

4


Input

5 1 1 1 1 0 0 0 0 0 0 0 0 0


Output

8

Note

In the first test case the board after the move from the hole with 7 stones will look like 1 2 2 0 0 0 0 0 0 0 1 1 1 1. Then the player collects the even numbers and ends up with a score equal to 4.
import java.io.*;
import java.lang.reflect.Array;
import java.util.*;

public class Main {

    public static void main(String[] args) throws IOException {
        FastScanner in = new FastScanner(System.in);
        FastPrinter out = new FastPrinter(System.out);
        //FastScanner in = new FastScanner(new InputStreamReader(new FileInputStream(new File("mars.in"))));
        //FastPrinter out = new FastPrinter(new OutputStreamWriter(new FileOutputStream(new File("mars.out"))));
        int[] mas = new int[15];
        for(int i = 0; i < 14; i++){
            mas[i] = in.nextInt();
        }
        int[] mas2 = new int[15];
        long ans = 0;
        for(int i = 0; i < 14; i++){
            long sum = 0;
            for(int j = 0; j < 14; j++){
                mas2[j] = mas[j] + (mas[i] / 14);
            }

            mas2[i] = mas[i] / 14;

            for(int j = i + 1; j < i + 1 + mas[i] % 14; j++){
                mas2[j % 14]++;
            }
            for(int j = 0; j < 14; j++)
                if(mas2[j % 14] % 2 == 0) sum += mas2[j % 14];

            ans = Math.max(ans, sum);
        }
        System.out.println(ans);
        out.close();
    }
}

class FastPrinter {
    private final PrintWriter writer;

    public FastPrinter(OutputStream outputStream) {
        writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outputStream)));
    }

    public FastPrinter(Writer writer) {
        this.writer = new PrintWriter(writer);
    }

    public void close() {
        writer.close();
    }

    public void println(long i) {
        writer.println(i);
    }

    public void println(double d) {
        writer.println(d);
    }

    public void println(String s) {
        writer.println(s);
    }

    public void println(String format, Object... args) {
        println(String.format(format, args));
    }

    public void println() {
        writer.println();
    }

    public void print(long i) {
        writer.print(i);
    }

    public void print(char c) {
        writer.print(c);
    }

    public void print(double d) {
        writer.print(d);
    }

    public void print(String s) {
        writer.print(s);
    }

    public void print(String format, Object... args) {
        print(String.format(format, args));
    }

    public void flush() {
        writer.flush();
    }
}

class FastScanner {

    private BufferedReader reader;
    private StringTokenizer st;
    private byte[] buf = new byte[1024];
    private int curChar;
    private int numChars;
    private SpaceCharFilter filter;

    public FastScanner(InputStream stream) {
        this.reader = new BufferedReader(new InputStreamReader(stream));
        this.st = new StringTokenizer("");
    }

    public FastScanner(InputStreamReader stream) {
        this.reader = new BufferedReader(stream);
        this.st = new StringTokenizer("");
    }

    public int nextInt() {
        return Integer.parseInt(next());
    }

    public long nextLong() {
        return Long.parseLong(next());
    }

    public double nextDouble() {
        return Double.parseDouble(next());
    }

    public String next() {
        while (!st.hasMoreTokens()) {
            st = new StringTokenizer(readLine());
        }
        return st.nextToken();
    }

    public String nextLine() {
        st = new StringTokenizer("");
        return readLine();
    }

    public String tryNextLine() {
        st = new StringTokenizer("");
        return tryReadLine();
    }

    private String readLine() {
        String line = tryReadLine();
        if (line == null) throw new InputMismatchException();
        return line;
    }

    private String tryReadLine() {
        try {
            return reader.readLine();
        } catch (IOException e) {
            throw new InputMismatchException();
        }
    }

    public int[] nextIntArray(int size) {
        int[] array = new int[size];
        for (int i = 0; i < size; i++)
            array[i] = nextInt();
        return array;
    }

    public int[][] nextIntTable(int rowCount, int columnCount) {
        int[][] table = new int[rowCount][];
        for (int i = 0; i < rowCount; i++)
            table[i] = nextIntArray(columnCount);
        return table;
    }

    public long[] nextLongArray(int size) {
        long[] array = new long[size];
        for (int i = 0; i < size; i++)
            array[i] = nextLong();
        return array;
    }

    public long[][] nextLongTable(int rowCount, int columnCount) {
        long[][] table = new long[rowCount][];
        for (int i = 0; i < rowCount; i++)
            table[i] = nextLongArray(columnCount);
        return table;
    }

    public boolean isSpaceChar(int c) {
        if (filter != null)
            return filter.isSpaceChar(c);
        return isWhitespace(c);
    }

    public static boolean isWhitespace(int c) {
        return c == ' ' || c == '\t' || isEOL(c);
    }

    public static boolean isEOL(int c) {
        return c == '\n' || c == '\r' || c == -1;
    }

    public interface SpaceCharFilter {
        public boolean isSpaceChar(int ch);
    }
}