import java.util.*;
public class ti4{
public static void main(String args[]){
System.out.println("请输入n阶方阵");
int n,i,j;
int sum1=0,sum2=0;
Scanner input=new Scanner(System.in);
n=input.nextInt();
public class ti4{
public static void main(String args[]){
System.out.println("请输入n阶方阵");
int n,i,j;
int sum1=0,sum2=0;
Scanner input=new Scanner(System.in);
n=input.nextInt();
int arrys[][]=new int[n][n];
System.out.println("请输入数据");
System.out.println("请输入数据");
for(i=0;i<n;i++)
for(j=0;j<n;j++){
arrys[i][j]=input.nextInt();
if(i==j)
sum1=sum1+arrys[i][j];
if(i==n-j-1)
sum2=sum2+arrys[i][j];
}
for(j=0;j<n;j++){
arrys[i][j]=input.nextInt();
if(i==j)
sum1=sum1+arrys[i][j];
if(i==n-j-1)
sum2=sum2+arrys[i][j];
}
System.out.println("主对角线之和"+sum1);
System.out.println("次对角线之和"+sum2);
System.out.println("次对角线之和"+sum2);
}
}