How to solve it

import java.io.*; import java.util.Scanner; public class Solution { public static void main(String[] args) throws Exception { //在此编写你的代码 Scanner sc=new Scanner(System.in); int a=sc.nextInt(); int b=sc.nextInt(); for(int i=0;i<a;i++){ for(int j=0;j<b;j++){ System.out.print("8"); } System.out.println(); } } }