HDOJ(HDU) 2500 做一个正气的杭电人(水~)

import java.util.Scanner;

public class Main{

    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        int t =sc.nextInt();
        while(sc.hasNext()){
            int n =sc.nextInt();
            for(int i=1;i<=3*n;i++){
                for(int j=1;j<=n;j++){
                    System.out.print("HDU");
                }
                System.out.println();
            }
        }
    }
}