题解 | #编码#

import java.util.*;
public class Main{
    public static void main(String[] args) {
    Scanner cin = new Scanner(System.in);
    char[] s = cin.next().toCharArray();
    int n = s.length;

    //用curSum来保存已有计算结果
    //sum计算4种情况之和
    int sum = 0, curSum = 0;
    for (int i = 0; i < 4; ++i) {
        if (i < n) {
            curSum += s[i] - 'a'; //我们把序列分成26块，从a-y开始的块
        }
        sum += curSum;
        if (i < n - 1) {
            sum += 1;
        }
        curSum *= 25;
    }

    System.out.println(sum);
    cin.close();
}
}