Problem: Kyoya Ootori is selling photobooks of the Ouran High School Host Club. He has 26 photos, labeled "a" to "z", and he has compiled them into a photo booklet with some photos in some order (possibly with some photos being duplicated). A photo booklet can be described as a string of lowercase letters, consisting of the photos in the booklet in order. He now wants to sell some "special edition" photobooks, each with one extra photo inserted anywhere in the book. He wants to make as many distinct photobooks as possible, so he can make more money. He asks Haruhi, how many distinct photobooks can he make by inserting one extra photo into the photobook he already has?

Please help Haruhi solve this problem.

Input

The first line of input will be a single string s (1 ≤ |s| ≤ 20). String s consists only of lowercase English letters. 

Output

Output a single integer equal to the number of distinct photobooks Kyoya Ootori can make.

Examples

Input

a


Output

51


Input

hi


Output

76

Note

In the first case, we can make 'ab','ac',...,'az','ba','ca',...,'za', and 'aa', producing a total of 51 distinct photo booklets. 

Solution (in JAVA):

Solution:
import java.io.*;
import java.util.*;

public class Main {
    public static void main(String[] args) throws Exception {
        IOUtils ut = new IOUtils(System.in, System.out);
        new Solution(ut);
        ut.close();
    }
}

class Solution {
    IOUtils io;

    public Solution(IOUtils io) throws Exception {
        this.io = io;

        Set<String> strs = new TreeSet<String>();

        StringBuilder s = new StringBuilder(io.read());
        int n = s.length();

        for (int i = 0; i <= n; i++) {
            for (int j = 0; j < 26; j++) {
                StringBuilder tmp = s.insert(i, (char) ('a' + j));
                strs.add(tmp.toString());
                s.delete(i, i + 1);
            }
        }
        io.writeln(strs.size());
    }
}

class IOUtils {
    public BufferedReader in;
    public PrintWriter out;
    StringTokenizer st = null;

    public IOUtils(InputStream inStream, OutputStream outStream) {
        in = new BufferedReader(new InputStreamReader(inStream));
        out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(outStream)));
    }

    private void read_input() throws Exception {
        while (st == null || !(st.hasMoreTokens())) {
            st = new StringTokenizer(in.readLine());
        }
    }

    public void close() throws Exception {
        out.flush();
        in.close();
        out.close();
    }

    public String read() throws Exception {
        read_input();
        return st.nextToken();
    }

    public int readInt() throws Exception {
        read_input();
        return Integer.parseInt(st.nextToken());
    }

    public long readLong() throws Exception {
        read_input();
        return Long.parseLong(st.nextToken());
    }

    public double readDouble() throws Exception {
        read_input();
        return Double.parseDouble(st.nextToken());
    }

    public void writeln(String i) throws Exception {
        out.println(i);
    }

    public void write(String i) throws Exception {
        out.print(i);
    }

    public void writeln() throws Exception {
        out.print("\n");
    }

    public void write(int i) throws Exception {
        out.print(i);
    }

    public void writeln(int i) throws Exception {
        out.println(i);
    }

    public void write(long i) throws Exception {
        out.print(i);
    }

    public void writeln(long i) throws Exception {
        out.println(i);
    }
}