import java.util.Scanner; // 注意类名必须为 Main, 不要有任何 package xxx 信息 public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); String password = in.nextLine(); int n = password.length(); int[][] dp = new int[n][n]; int ret = dfs(dp, 0, n - 1, password); System.out....
