#include <bits/stdc++.h> using namespace std; #define int long long signed main(){ ios::sync_with_stdio(false); cin.tie(nullptr); string s;cin>>s; int sum=0;int cnt=1; for(int i=s.size()-1;i>=0;i--){ char c=s[i]; int len=s[i]-'A'+1; sum+=lencnt; cnt=26; } cout<<sum; return 0; }