Matrix Flip Problem

matrix_flip.py

import fileinput

inputs = fileinput.input()
input_vals = []

for n in inputs:
	input_vals.append(n.replace('\n', ''))

numRows, numCols=[int(i) for i in input_vals[0].split(' ')]
countMaxWishes = {}

for i in range(numRows):
	row = input_vals[i+1]
	flipToP = []
	flipToT = []
	for j in range(0, len(row)):
		if row[j] == 'T':
			flipToP.append(j)
		else:
			flipToT.append(j)
    # As we iterate from the beginning so tuple(data[i]['P']) will uniquely identify
    # a set of flips (We don't need to sort them)
	countMaxWishes[tuple(flipToT)] = countMaxWishes.get(tuple(flipToT), 0) + 1
	countMaxWishes[tuple(flipToP)] = countMaxWishes.get(tuple(flipToP), 0) + 1

print max(countMaxWishes.values())