m0_51173992的博客

import java.util.Scanner; public class three { public static void main(String[] args) { int a[][];int n;int b[][]; int i,j,sum; Scanner in=new Scanner(System.in); n=in.nextInt(); a=new int[n][n]; for(i=0;i<n;i++) for(j=0;j<n;j++) a[i][j]=in.nextInt()