题目要求：


代码：

import java.util.Scanner;

public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int n = sc.nextInt();
        sc.nextLine();

        StringBuilder sb = new StringBuilder();

        for (int i = 0; i < n; i++) {
            String[] s = sc.nextLine().split(" ");

            for (int j = 0; j < s.length; j++) {
                if (s[j].contains("T")){
                    sb.append(Integer.valueOf(s[j].charAt(0)) - 64);
                }
            }
        }
        System.out.println(sb);
    }
}

结果：