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;
template <typename T1, typename T2>
struct less_second {
  bool operator()(pair<T1, T2> const& a, pair<T1, T2> const& b) const {
    return a.second < b.second;
  }
};
string int_to_string(int a) {
  stringstream ss;
  ss << a;
  return ss.str();
}
string double_to_string(double a) {
  stringstream ss;
  ss << a;
  return ss.str();
}
string float_to_string(float a) {
  stringstream ss;
  ss << a;
  return ss.str();
}
string long_to_string(long a) {
  stringstream ss;
  ss << a;
  return ss.str();
}
string long_long_to_string(long long a) {
  stringstream ss;
  ss << a;
  return ss.str();
}
int string_to_int(string s) { return atoi(s.c_str()); }
float string_to_float(string s) { return atof(s.c_str()); }
long string_to_long(string s) { return atol(s.c_str()); }
long long string_to_long_long(string s) { return atoll(s.c_str()); }
int photobooks_diferentes_de(string s) {
  return 26 * (s.size() + 1) - s.size();
}
int main() {
  string s;
  cin >> s;
  cout << photobooks_diferentes_de(s);
  return 0;
}