function solve(input) {

let countFloors = Number(input[0]);

let countRoomsForOneFloor = Number(input[1]);

let apartment = '';

let office = '';

let large = '';


for (let i = countFloors; 1 <= i; i--) {



for (let j = 0; j < countRoomsForOneFloor; j++) {

    if (i % 2 === 0 && i !== countFloors) {

        if (j !== countRoomsForOneFloor - 1) {

        office += `O${i}${j}` + ' ';

        } else {

            office += `O${i}${j}`;

        }



     } else if (i % 2 !== 0 && i !== countFloors) {

        if (j !== countRoomsForOneFloor - 1) {

            apartment += `A${i}${j}` + ' ';

            } else {

                apartment += `A${i}${j}`;

            }


    } else {

        if (j !== countRoomsForOneFloor - 1) {

            large += `L${i}${j}` + ' ';

            } else {

                large += `L${i}${j}`;

            }

    }

  if (j === countRoomsForOneFloor - 1 && (apartment !== '' || office !== '' || large !== '')) {


    console.log(`${large}${office}${apartment}`);




    office = '';

    apartment = '';

    large = '';

  }



} // Inner loop




} // Outer loop







}