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:
//package codeforcesround.year2015.june.round309;

import java.io.BufferedReader;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.StringTokenizer;
 
public class problemA {
        InputReader in;
        PrintWriter out;
        boolean submit;
        
        private void debug(Object... o) {
                if(!submit) {
                        System.out.println(Arrays.deepToString(o));
                }
        }
 
        public static void main(String args[]) throws IOException {
                new problemA();
        }
        
        public problemA() throws IOException {
                long start = System.currentTimeMillis();
                submit = !false;
                if(submit == false) in = new InputReader(new FileInputStream("D:\\input.txt"));
                else in = new InputReader(System.in);
                out = new PrintWriter(System.out);
                
                int t = 1;
                while(t-- > 0)
                        solve();
                
                long end = System.currentTimeMillis();
                debug(end - start, " ms");
                out.close();
        }
        
        private void solve() throws IOException {
                String S = in.next();
                long ans = 26 * (S.length() + 1);
                ans -= S.length();
                out.println(ans);
        }

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

                public InputReader(InputStream stream) {
                        reader = new BufferedReader(new InputStreamReader(stream));
                        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 String nextString() {
                        return next();
                }

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

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

                public float nextFloat() {
                        return Float.parseFloat(next());
                }

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