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); int n = in.nextInt(); int arr[][] = new int[n][4]; for (int i = 0; i < n; i++) { //数据初始化 if(i == 0){ arr[0][0] = 0; arr[0][1] = 0; arr[...