import java.util.Scanner;
public class e15 {
    public static void main(String [] args) {
        Scanner input = new Scanner(System.in);
        // pelikentän koko
        System.out.println("Give the table size: ");
        int size = input.nextInt();
        String[] table = new String[size];
        int bombs = size / 3;
        boolean lost = false;

        // kentän tulostus
        for (int i=0; i<size; i++) {
            table[i] = "[ ]";
            System.out.print(table[i]);
        }
        // pommien paikat
        while (bombs>0) {
            int i = MyMath.getRandom(0, size-1);
            if (!table[i].equals("[B]")) {
                table[i] = "[B]";
                bombs--;
            }
        }
        // paikan syöte
        System.out.println("\nChoose your spot >:)");
        int spot = input.nextInt()-1;

        for (int i=0; i<size; i++) {
            if (i==spot) {
                System.out.print("[P]");
            } else {
                System.out.print("[ ]");
            }
        }
    }
}
class MyMath {
    public static int getRandom(int min, int max) {
        return (int) (Math.random()*((max-min)+1))+min;
    }
}