#include <cmath> #include <cstdio> #include <vector> #include <iostream> #include <algorithm> int main() { std::vector<int> h(26); for (auto& hi : h) { std::cin >> hi; } std::string s; std::cin >> s; int width = 0; int height = 0; for (char c : s) { width += 1; height = std::max(height, h[c - 'a']); } std::cout << (width * height) << std::endl; return 0; }