#include <bits/stdc++.h>

using namespace std;

int main(){
    ifstream input_file("input.txt");
    string line;
    unsigned int score = 0;

    // while(getline(input_file, line)){
    //     set<char> items;
    //     auto l = line.length();

    //     for(int i = 0; i < l / 2; ++i){
    //         items.insert(line[i]);
    //     }

    //     for(int i = l / 2; i < l; ++i){
    //         if(items.find(line[i]) != items.end()){
    //             if(line[i] >= 'a' && line[i] <= 'z'){
    //                 score += line[i] - 'a' + 1;
    //             } else{
    //                 score += line[i] - 'A' + 1 + 26;
    //             }

    //             break;
    //         }
    //     }
    // }

    map<char, int> badges;
    int group_counter = 0;
    while(getline(input_file, line)){
        set<char> items;
        for(char c : line){
            items.insert(c);
        }

        for(char c : items){
            badges[c] += 1;

            if(badges[c] == 3){
                if(c >= 'a' && c <= 'z'){
                    score += c - 'a' + 1;
                } else{
                    score += c - 'A' + 1 + 26;
                }
            }
        }
        
        if(group_counter == 2){
            group_counter = 0;
            badges.clear();
        } else{
            group_counter++;
        }
    }

    cout << "Score: " << score << endl;

    return 0;
}