import java.util.HashMap; 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 sc = new Scanner(System.in); while (sc.hasNext()) { int res = 0; String str = sc.nextLine(); HashMap<Integer, String>hs = new HashMap&l...