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. 
import org.omg.CORBA.MARSHAL;

import java.io.*;
//import java.lang.reflect.Array;
import java.lang.reflect.Array;
import java.util.*;


public class citylights {
    public static int[] arr;
    public static ArrayList<Integer> p;
    public static int[] val;
    public static long[] facto;
    public static long mod = 100000;
    public static long[] fillme;
    // public static HashMap<pair, Integer> hs;
    public static int ans = 0;
    public static int n, k;
    public static int [][]a;
    public static int []cnt=new int[27];
    static InputReader in;
    static PrintWriter out;
    public static HashSet<Long> hs=new HashSet<>();
    // public static int []tt;

//--------------------------------------My Code--------------------------------------------

    public static void main(String[] args) throws IOException {
        arr = new int[1000001];
        p = new ArrayList<>();
        val = new int[1000001];
        facto = new long[1000007];
        //tt=new int[100];

        fillme = new long[1000007];


      //   sieve();
         in = new InputReader(System.in);
         out = new PrintWriter(System.out);

         String n=in.readString();
         out.println(((n.length()+1)*25)+1);

        out.close();

    }
    //-------------------------------------------Code ends-------------------------------

    public static void primeFactors(long n)
    {
        // Print the number of 2s that divide n
        while (n%2==0)
        {
           hs.add((long) 2);
            n /= 2;
        }

        // n must be odd at this point.  So we can
        // skip one element (Note i = i +2)
        long k= (long) Math.sqrt(n);
        for (int i = 3; i <= k; i+= 2)
        {
            // While i divides n, print i and divide n
            while (n%i == 0)
            {
                hs.add((long) i);
                n /= i;
            }
        }

        // This condition is to handle the case whien
        // n is a prime number greater than 2
        if (n > 2)
            hs.add(n);
    }
    static class trio{

        int x;
        int o;
        boolean kia=false;

        public trio(int x, int o,boolean kia) {
            this.x = x;
            this.o = o;
            this.kia=kia;

        }
    }
    public static long bsearchg(int[] a, int t) {
        long ans = 0;
        int low = 0;
        int high = a.length - 1;
        while (low <= high) {
            int mid = (low + high) / 2;
            if (a[mid] <= t) {
                ans = mid;

                low = mid + 1;
            } else
                high = mid - 1;


        }
        return ans;

    }


    private static long fib(long n) {
        if (n == 1) return 2l;
        if (n == 0) return 1l;
        long[][] F = new long[][]{{1, 1}, {1, 0}};
        matPow(F, n);
        return F[0][0];
        //return 0l;
    }

    private static void matPow(long[][] F, long n) {
        if (n == 0 || n == 1)
            return;
        long M[][] = new long[][]{{1, 1}, {1, 0}};

        matPow(F, n / 2);
        matrixMult(F, F);

        if (n % 2 != 0)
            matrixMult(F, M);
    }

    private static void matrixMult(long A[][], long M[][]) {
        long a = ((A[0][0] * M[0][0]) % mod + (A[0][1] * M[1][0]) % mod) % mod;
        long b = ((A[0][0] * M[0][1]) % mod + (A[0][1] * M[1][1]) % mod) % mod;
        long c = ((A[1][0] * M[0][0]) % mod + (A[1][1] * M[1][0]) % mod) % mod;
        long d = ((A[1][0] * M[0][1]) % mod + (A[1][1] * M[1][1]) % mod) % mod;

        A[0][0] = a;
        A[0][1] = b;
        A[1][0] = c;
        A[1][1] = d;
    }

    private static long lcm(long a, long b) {
        return (long) ((a * b) / euclgcd(a, b));
    }

    public static int[] rotate(int[] order, int by) {
        int length = order.length;
        int[] a = new int[length];
        for (int i = 0; i < length; i++) {
            a[(i + by) % length] = order[i];

        }
        return a;


    }

    public static long modinv(long x, long m) {
        return powmod(x, m - 2, m);

    }

    public static long eulertoitent(long n) {
        long res = n;
        for (int i = 2; i * i <= n; i++)
            if (n % i == 0) {
                while (n % i == 0)
                    n /= i;
                res -= res / i;
            }
        if (n > 1)
            res -= res / n;
        return res;


    }

    //calculate factorial till modulas
    public static void fact() {
        facto[0] = 1;
        for (int i = 1; i <= mod; i++) {
            facto[i] = (i * facto[i - 1]) % mod;
        }


    }

    public static void sieve() {
        arr[0] = 1;
        arr[1] = 1;

        for (int i = 2; i * i < 1000001; i++) {
            if (arr[i] == 0) {

                for (int j = i * i; j < 1000001; j += i) {
                    arr[j] = 1;
                }
            }
        }
        for (int i = 2; i < 1000001; i++) {
            if (arr[i] == 0)
                p.add(i);
        }
    }

    public static boolean isPrime(int n) {
        // Corner cases
        if (n <= 1) return false;
        if (n <= 3) return true;

        // This is checked so that we can skip
        // middle five numbers in below loop
        if (n % 2 == 0 || n % 3 == 0) return false;

        for (int i = 5; i * i <= n; i = i + 6)
            if (n % i == 0 || n % (i + 2) == 0)
                return false;

        return true;
    }

    public static long euclgcd(long a, long b) {
        if (b == 0)
            return a;
        else
            return euclgcd(b, a % b);

    }

    public static long powmod(long x, long n, long m) {
        long result = 1L;
        while (n > 0) {
            if (n % 2 == 1)
                result = (result * x) % m;
            x = (x * x) % m;
            n = n / 2;
        }

        return result;
    }


    static class InputReader {

        private InputStream stream;
        private byte[] buf = new byte[8192];
        private int curChar, snumChars;
        private InputReader.SpaceCharFilter filter;

        public InputReader(InputStream stream) {
            this.stream = stream;
        }

        public int snext() {
            if (snumChars == -1)
                throw new InputMismatchException();
            if (curChar >= snumChars) {
                curChar = 0;
                try {
                    snumChars = stream.read(buf);
                } catch (IOException e) {
                    throw new InputMismatchException();
                }
                if (snumChars <= 0)
                    return -1;
            }
            return buf[curChar++];
        }

        public int nextInt() {
            int c = snext();
            while (isSpaceChar(c))
                c = snext();
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = snext();
            }
            int res = 0;
            do {
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c - '0';
                c = snext();
            } while (!isSpaceChar(c));
            return res * sgn;
        }

        public long nextLong() {
            int c = snext();
            while (isSpaceChar(c))
                c = snext();
            int sgn = 1;
            if (c == '-') {
                sgn = -1;
                c = snext();
            }
            long res = 0;
            do {
                if (c < '0' || c > '9')
                    throw new InputMismatchException();
                res *= 10;
                res += c - '0';
                c = snext();
            } while (!isSpaceChar(c));
            return res * sgn;
        }

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

        public String readString() {
            int c = snext();
            while (isSpaceChar(c))
                c = snext();
            StringBuilder res = new StringBuilder();
            do {
                res.appendCodePoint(c);
                c = snext();
            } while (!isSpaceChar(c));
            return res.toString();
        }

        public boolean isSpaceChar(int c) {
            if (filter != null)
                return filter.isSpaceChar(c);
            return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1;
        }

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


}