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 CPP):

Solution:
#include <bits/stdc++.h>
using namespace std;
const long long mod7 = 1000000007;
vector<string> split(const string& s, char c) {
  vector<string> v;
  stringstream ss(s);
  string x;
  while (getline(ss, x, c)) v.emplace_back(x);
  return move(v);
}
void err(vector<string>::iterator it) {}
template <typename T, typename... Args>
void err(vector<string>::iterator it, T a, Args... args) {
  cout << it->substr((*it)[0] == ' ', it->length()) << ": " << a << " ";
  err(++it, args...);
}
template <typename T>
long long biggest(T x) {
  long long b_i = 0;
  for (long long i = 0; i < x.size(); i++) {
    if (x[b_i] < x[i]) {
      b_i = i;
    }
  }
  return b_i;
}
template <typename T>
long long smallest(T x) {
  long long s_i = 0;
  for (long long i = 0; i < x.size(); i++) {
    if (x[s_i] > x[i]) {
      s_i = i;
    }
  }
  return s_i;
}
template <typename T>
string tostring(T num) {
  stringstream convert;
  convert << num;
  return convert.str();
}
template <typename T>
long long tonumber(T stringNum) {
  long long a;
  stringstream convert;
  convert << stringNum;
  convert >> a;
  return a;
}
long long 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;
char C1, C2, C3, C4;
string S1, S2, S3, S4;
vector<long long> V1, V2, V3, V4;
bool B1, B2;
int main() {
  std::ios_base::sync_with_stdio(false);
  cin.clear();
  cin >> S1;
  cout << (S1.length() + 1) * 26 - S1.length() << endl;
}