text: import os
  import numpy as np
  from Reader import ReadU
  from ops import MakeR, Fidelity
  from utils import Minimize
  
  INPUT_TXT = 'Questions/Question_1_Unitary.txt'
  ANSWER_TXT = '../Answer/Question_1_Answer.txt'
  
  def main(in_txt=INPUT_TXT, out_txt=ANSWER_TXT):
      U = ReadU(in_txt)
      func = lambda t:Fidelity(MakeR(t), U)
      theta = Minimize(func, 0, 2*np.pi)
      with open(out_txt, 'w') as f:
          f.write('R 0 %.16lf'%theta)
      # print(x)
  
  if __name__ == '__main__':
      if not os.path.exists('../Answer'):
          os.makedirs('../Answer')
      main()
  