from random import *;

def print_hallway(length, position):
    for i in range(1, length+1):
        if i == position:
            print('P', end = "");
        else:
            print('.', end = "");
    print("")

def move_princess(doors, position):
    temp = randrange(0,2);
    if position == 1:
        return position + 1;
    if position == doors:
        return position - 1;
    if temp == 0:
        return position - 1;
    else:
        return position + 1;


def princess(number_of_doors, steps):
    actual_position = randrange(1, number_of_doors + 1)
    for i in range(steps):
        print_hallway(number_of_doors,actual_position);
        actual_position = move_princess(number_of_doors, actual_position);