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 str = in.nextLine(); String[] strs = str.split(" "); int len = strs.length - 1; String target = strs[len]; System.out.println(targe...