import random
import time
import os

size = int(input("Enter a size:"))
rows = cols = size

#Generate 2d array
graphic = []
for i in range(rows):
    col = []
    for j in range(cols):
        col.append(0)
    graphic.append(col)

#'Easy' way to make a 2D array
#graphic = [[0 for i in range(cols)] for j in range(rows)]
    
#Fill array with random values
#for i in range(0,size):
    #for j in range(0,size):
        #graphic[i][j] = random.randint(0,1)

graphic[int(cols/2)][int(rows/2)] = 1
        
#print(graphic)

def print_array(arr):
    for i in range(0,len(arr)):
        for j in range(0,len(arr[0])):
    
            if (arr[i][j] == 1):
                print("#",end="")
            else:
                print(" ",end="")
        print("")

#Change array to make fancy effect
def update_array(arr, turn):
    for i in range(0,len(arr)):
        for j in range(0,len(arr[0])):
            if (arr[i][j] == 1 and i > 0 and i < rows-1 and j > 0 and j < cols-1):
                if (arr[i][j+1] == 0): arr[i][j+1] = 2 #2 is a temporary state
                if (arr[i][j-1] == 0): arr[i][j-1] = 2
                if (arr[i+1][j] == 0): arr[i+1][j] = 2
                if (arr[i-1][j] == 0): arr[i-1][j] = 2
                arr[i][j] = -2

    for i in range(0, len(arr)): 
        for j in range(0, len(arr[0])):
            if (arr[i][j] == 2):
                arr[i][j] = 1
            if (arr[i][j] < 0):
                arr[i][j] += 1

    if (turn % 5 == 0):
        arr[int(cols/2)][int(rows/2)] = 1

turn = 1
while True:
    os.system('cls||clear')
    print_array(graphic)
    update_array(graphic, turn)
    turn += 1
    time.sleep(1)
    print()