程序代码：

import java.util.Scanner;

public class Test {
    public static void main(String[] args) {
        Scanner in = new Scanner(System.in);
        while (in.hasNext()) {
            String s = in.next();
            char type = s.charAt(0);
            String str = new Scanner(System.in).nextLine();
            char[] c = str.toCharArray();
            if (type == 'C') {
                System.out.println("cccccc");
                int len = str.length();
                int cnt = 1;
                for (int i = 0; i < len - 1; i++) {
                    if (c[i] == c[i + 1]) {
                        cnt++;
                    } else if(c[i] != c[i + 1]){
                        if (cnt > 1) {
                            System.out.printf("%d", cnt);
                        }
                        System.out.printf("%c", c[i]);
                        cnt = 1;
                    }
                }
            } else {
                System.out.println("dddddd");
                int len = str.length();
                int cnt = 0;
                for (int i = 0; i < len; i++) {
                    if (c[i] <= '9' && c[i] >= '0') {
                        cnt *= 10;
                        cnt += c[i] - '0';
                    } else {
                        if (cnt == 0) {
                            System.out.printf("%c", c[i]);
                        } else
                            for (int j = 0; j < cnt; j++) {
                                System.out.printf("%c", c[i]);
                            }
                        cnt = 0;
                    }
                }
            }
        }
        in.close();
    }
}