题解 | #牛牛的字符矩形#

import java.util.Scanner;

public class Main{

public static void main(String[] args){
     Scanner scanner = new Scanner(System.in);
    char c = scanner.next().charAt(0);
    for(int i = 0 ; i<3;i++){
        for(int j = 0 ; j< 3;j++){
            System.out.print(c);
        }
        System.out.println();
    }
}

}