package baekjoon.그리디;
import java.io.*;
import java.util.*;
class Main1339 {
public static void main(String[] args) throws Exception {
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
int N = Integer.parseInt(br.readLine());
String[] s = new String[N];
Integer[] alpha = new Integer[26];
Arrays.fill(alpha, 0);
for (int i = 0; i < N; i++) {
s[i] = br.readLine();
}
for (int i = 0; i < N; i++) {
int num = 1;
for (int j = s[i].length() - 1; j >= 0; j--) {
alpha[s[i].charAt(j) - 65] += num;
num *= 10;
}
}
Arrays.sort(alpha, Collections.reverseOrder());
int index = 0;
int number = 9;
int answer = 0;
while (alpha[index] != 0) {
answer += alpha[index++] * number--;
}
System.out.println(answer);
}
}
알고리즘 & 자료구조/백준