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.util.*;
import java.io.*;

public class Sol {

	static final boolean stdin = true;
	static final String filename = "";
	static FastScanner br;
	static PrintWriter pw;

	public static void main(String[] args) throws IOException {

		if (stdin) {
			br = new FastScanner();
			pw = new PrintWriter(new OutputStreamWriter(System.out));
		} else {
			br = new FastScanner(filename + ".in");
			pw = new PrintWriter(new FileWriter(filename + ".out"));
		}

		Solver solver = new Solver();
		solver.solve(br, pw);
	}

	static class Solver {
		static long mod = 1000000000;

		public void solve(FastScanner br, PrintWriter pw) throws IOException {
			char[] s = br.nextToken().toCharArray();
			HashSet<String> hs = new HashSet<String>();
			char[] chars = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r',
					's', 't', 'u', 'v', 'w', 'x', 'y', 'z' };
			for (int i = 0; i < s.length + 1; i++) {
				char[] temp = new char[s.length + 1];
				for (char c : chars) {
					for (int j = 0; j < i; j++) {
						temp[j] = s[j];
					}
					temp[i] = c;
					for (int j = i + 1; j < s.length + 1; j++) {
						temp[j] = s[j - 1];
					}
					hs.add(new String(temp));
				}
			}
			pw.println(hs.size());
			pw.close();
		}

		static long pow(long a, long b) {
			if (b == 0)
				return 1L;
			long val = pow(a, b / 2);
			if (b % 2 == 0)
				return val * val % mod;
			else
				return val * val % mod * a % mod;
		}

	}

	static class Point1 implements Comparable<Point1> {
		int a;
		int b;

		Point1(int a, int b) {
			this.a = a;
			this.b = b;
		}

		@Override
		public int compareTo(Point1 o) {
			return this.a - o.a;
		}

	}

	static class Point2 implements Comparable<Point2> {
		int a;
		int b;

		Point2(int a, int b) {
			this.a = a;
			this.b = b;
		}

		@Override
		public int compareTo(Point2 o) {
			return this.b - o.b;
		}

	}

	static class Dsu {
		int n;
		int[] parent;
		int[] rank;

		public Dsu(int n) {
			this.n = n;
			parent = new int[n];
			rank = new int[n];
		}

		public void createSet() {
			for (int i = 0; i < n; i++) {
				parent[i] = i;
				rank[i] = 0;
			}
		}

		public int findParent(int x) {
			if (parent[x] == x)
				return x;
			parent[x] = findParent(parent[x]);
			return parent[x];
		}

		public void mergeSet(int a, int b) {
			int pa = findParent(a);
			int pb = findParent(b);

			if (pa == pb)
				return;

			if (rank[pa] > rank[pb]) {
				parent[pb] = pa;
			} else if (rank[pa] < rank[pb]) {
				parent[pa] = pb;
			} else {
				parent[pb] = pa;
				rank[pa]++;
			}
		}
	}

	public static class FastScanner {
		BufferedReader br;
		StringTokenizer st;

		public FastScanner(String s) {
			try {
				br = new BufferedReader(new FileReader(s));
			} catch (FileNotFoundException e) {
				e.printStackTrace();
			}
		}

		public FastScanner() {
			br = new BufferedReader(new InputStreamReader(System.in));
		}

		String nextToken() {
			while (st == null || !st.hasMoreElements()) {
				try {
					st = new StringTokenizer(br.readLine());
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
			return st.nextToken();
		}

		int nextInt() {
			return Integer.parseInt(nextToken());
		}

		long nextLong() {
			return Long.parseLong(nextToken());
		}

		double nextDouble() {
			return Double.parseDouble(nextToken());
		}

		ArrayList<Integer>[] nextGraph(int nodes, int edges) {
			ArrayList<Integer>[] adj = new ArrayList[nodes];
			for (int i = 0; i < nodes; i++) {
				adj[i] = new ArrayList<Integer>();
			}
			for (int i = 0; i < edges; i++) {
				int a = nextInt() - 1;
				int b = nextInt() - 1;
				adj[a].add(b);
				adj[b].add(a);
			}
			return adj;
		}
	}
}