06. Building

package NestedLoops;

import java.util.Scanner;

public class P06Building {
    public static void main(String[] args) {
        Scanner scanner = new Scanner(System.in);

             int floors = Integer.parseInt(scanner.nextLine());
             int rooms = Integer.parseInt(scanner.nextLine());

        for (int i = floors; i >= 1 ; i--) {

            for (int j = 0; j < rooms; j++) {

                if (i == floors){
                    System.out.printf("L%d%d ", i, j);
                } else if (i % 2 == 0) {
                    System.out.printf("O%d%d ", i, j);
                }else {
                    System.out.printf("A%d%d ", i, j);
                }

            }

            System.out.println();

        }
    }
}