#include <bits/stdc++.h>
using namespace std;
 
typedef long long int ll;
#define fast_io                     \
  ios_base::sync_with_stdio(false); \
  cin.tie(NULL);                    \
  cout.tie(NULL)
#define nl << "\n"
 
int count_cost(string s)
{
    int ans=0;
    for(int i=0;i<s.size();i++)
    {
	int a=s[i]-'a';
	a++;
	ans+=a;
    }
    //cout<<"Cost of string "<<s<<" is -> "<<ans nl;
    return ans;
}
 
void solve() {
    int n,k;
    cin>>n;
    k=15;
    int ans=0;
    while(n--)
    {
	string s;
	cin>>s;
	int a=s.size();
	s+=s;
	string sel="zzzzzzzzzzzzzzz";
	for(int i=0;i<a;i++)
	{
	    string s1;
	    s1=s.substr(i,k);
	    if(sel>s1)
		sel=s1;
	}
	ans+=count_cost(sel);
    }
    cout<<ans nl;
}
 
int32_t main() {
  fast_io;
  solve();
  return 0;
}