letter_mystery.cpp

#include <cmath>
#include <cstdio>
#include <vector>
#include <iostream>
#include <algorithm>
using namespace std;

int palCount(string str){
    int i = 0, j = str.length() - 1, cnt = 0;
    while(i < j){
        if (str[i] != str[j])
            cnt += abs(int(str[i]-str[j]));
        i++;
        j--;
        
    }
    return cnt;
                          
}


int main() {
   int t;
    cin >> t;
    string str;
    while(t--){
        cin >> str;
        cout << palCount(str) << endl;
		
    }
    return 0;
}