a=input()
print(len(a)*25+26)
#include <bits/stdc++.h>
using namespace std;
int main() {
ios_base::sync_with_stdio(0);
cin.tie(0);
string s;
cin >> s;
set<string> st;
for(char c = 'a'; c <= 'z'; c++) {
for(int i = 0; i <= (int) s.size(); i++) {
st.insert(s.substr(0, i) + c + s.substr(i, (int) s.size() - i));
}
}
cout << (int) st.size();
}/*1687692541.065371*/
Split houses | Divisible |
Three primes | Coprimes |
Cost of balloons | One String No Trouble |
Help Jarvis! | Lift queries |
Goki and his breakup | Ali and Helping innocent people |
Book of Potion making | Duration |
Birthday Party | e-maze-in |
Bricks Game | Char Sum |
Two Strings | Anagrams |
Prime Number | Lexical Sorting Reloaded |
1514A - Perfectly Imperfect Array | 580A- Kefa and First Steps |
1472B- Fair Division | 996A - Hit the Lottery |
MSNSADM1 Football | MATCHES Playing with Matches |
HRDSEQ Hard Sequence | DRCHEF Doctor Chef |
559. Maximum Depth of N-ary Tree | 821. Shortest Distance to a Character |