word.cpp

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

int letter_to_index(char letter, char first_letter = 'a') {
    return letter - first_letter;
}

int main() {
    const int alphabet_size = 26;
    vector<int> letters_height(alphabet_size);
    for (int & el: letters_height) {
        cin >> el;
    }
    
    string word;
    cin >> word;
    const char letter_with_max_height = *max_element(word.begin(), word.end(),
                                                   [letters_height](char a, char b) {
                                                       return letters_height[letter_to_index(a)] <
                                                              letters_height[letter_to_index(b)];
                                                   });
    const int max_height = letters_height[letter_to_index(letter_with_max_height)];
    cout <<  word.size() * max_height;
    return 0;
}