import sys
import os
from pprint import pprint
import time
import math

#colors
from termcolor import colored

grid = []

def p(x,*args):
    for idx,i in enumerate(x):
        for jdx,j in enumerate(i):
            if j == '#':
                print(colored(j,'red'),end='')
            #elif (idx,jdx) in steps:
            #    print(colored(j,'green'),end='')
            else:
                print(j,end='')
        print()


with open(sys.argv[1]) as file:
    for line in file:
        grid.append(list(line.rstrip()))

steps = []

ngrid = []

def rotate_grid(grid,times):
    for i in range(times):
        grid = list(zip(*grid[::-1]))
    p(grid)
    return grid

def find_sym(grid):
    mirror = 0
    found = False

    for c,col in enumerate(grid):
        if c+1 < len(col) and not found:


    for r,row in enumerate(grid):
        if r+1 < len(grid) and not found:
            print('testing ' + str(r))
            if grid[r] == grid[r+1]:
                for c in range(r,-1,-1):
                    if (r-c)+r+1 < len(grid):
                        if grid[c] == grid[(r-c)+r+1]:
                            found = True
                            mirror = r+1
                        else:
                            return None
    return mirror

tmp = []
for i in grid:
    if i == []:
        print('new grid')
        pprint(tmp)
        print(find_sym(tmp))
        tmp = []
    else:
        tmp.append(i)