import java.util.*; public class Main { public static void main(String[] args) { Scanner in = new Scanner(System.in); // 注意 hasNext 和 hasNextLine 的区别 List<String> list = new ArrayList<>(); int A = 0, B = 0, C = 0, D = 0, E = 0, errIpOrMask = 0, privateIp = 0; String[] ipArr = new String[...