#include <bits/stdc++.h>

using namespace std;
using ll = long long;
using ld = long double;

int main()
{
    string al(26, 'a');
    iota(al.begin(), al.end(), 65);
    al += " '";
    ld dp = 60.0 * M_PI / 28;
    ll n;
    cin >> n;
    cin.ignore();
    while (n-- > 0)
    {
        string x;
        ld sum = 0;
        getline(cin, x);
        ll p = al.find(x.at(0));
        ll ps;
        for (int i = 1; i < x.size(); i++)
        {
            ps = al.find(x.at(i));
            sum += dp * min(abs(p - ps), 28 - abs(p - ps)) / 15.0;
            sum++;
            p = ps;
        }
        cout << sum << endl;
    }
    return 0;
}