def get_equal(Input, k):
  def find_equal_tuple(Input, k):
    flag = 1
    for tuple in Input:
      if len(tuple) != k:
        flag = 0
        break
    return flag
  
  if find_equal_tuple(Input, k) == 1:
    return ("All tuples have same length")
  else:
    return ("All tuples do not have same length")
def count_ways(n):
	 
	A = [0] * (n + 1) 
	B = [0] * (n + 1) 
	A[0] = 1
	A[1] = 0
	B[0] = 0
	B[1] = 1
	for i in range(2, n+1): 
		A[i] = A[i - 2] + 2 * B[i - 1] 
		B[i] = A[i - 1] + B[i - 2] 
	return A[n] 