




from itertools import permutations





def 							lowerCamelCase    (							UpperCAmelCase_	:      int = 5      )->			int:

       """simple docstring"""




       if gon_side < 3 or gon_side > 5:
              raise ValueError("""gon_side must be in the range [3, 5]"""      )

       # Since it's 16, we know 10 is on the outer ring
       # Put the big numbers at the end so that they are never the first number
       a			   =list(range(gon_side + 1   ,       0   ,       -1      )      )
       a			   =list(range(gon_side + 2   ,       gon_side * 2 + 1      )      )

       for perm in permutations(small_numbers + big_numbers      ):
              a			   =generate_gon_ring(UpperCAmelCase_   ,       list(UpperCAmelCase_      )      )
              if is_magic_gon(UpperCAmelCase_      ):
                     return int("""""".join(str(UpperCAmelCase_      ) for n in numbers      )      )

       a			   =F'''Magic {gon_side}-gon ring is impossible'''
       raise ValueError(UpperCAmelCase_      )





def 							lowerCamelCase    (							UpperCAmelCase_	:      int   ,       UpperCAmelCase_	:      list[int]      )->			list[int]:

       """simple docstring"""




       a			   =[0] * (gon_side * 3)
       a			   =perm[0:3]
       perm.append(perm[1]      )

       a			   =1 if gon_side < 5 else 2

       for i in range(1   ,       len(UpperCAmelCase_      ) // 3 + magic_number      ):
              a			   =perm[2 * i + 1]
              a			   =result[3 * i - 1]
              a			   =perm[2 * i + 2]

       return result





def 							lowerCamelCase    (							UpperCAmelCase_	:      list[int]      )->			bool:

       """simple docstring"""




       if len(UpperCAmelCase_      ) % 3 != 0:
              raise ValueError("""a gon ring should have a length that is a multiple of 3"""      )

       if min(numbers[::3]      ) != numbers[0]:
              return False

       a			   =sum(numbers[:3]      )

       return all(sum(numbers[i : i + 3]      ) == total for i in range(3   ,       len(UpperCAmelCase_      )   ,       3      )      )


if __name__ == "__main__":
    print(solution())






import math
import os

import cva
import numpy as np

_lowerCamelCase							=      255.0





def 							lowerCamelCase    (							UpperCAmelCase_	:      float   ,       UpperCAmelCase_	:      float      )->			float:

       """simple docstring"""




       a			   =np.mean((original - contrast) ** 2      )
       if mse == 0:
              return 100

       return 20 * math.logaa(PIXEL_MAX / math.sqrt(UpperCAmelCase_      )      )





def 							lowerCamelCase    (							)->			None:

       """simple docstring"""




       a			   =os.path.dirname(os.path.realpath(UpperCAmelCase_      )      )
       # Loading images (original image and compressed image)
       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/original_image.png"""      )      )
       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/compressed_image.png"""      )   ,       1      )

       a			   =cva.imread(os.path.join(UpperCAmelCase_   ,       """image_data/PSNR-example-base.png"""      )      )
       a			   =cva.imread(
           os.path.join(UpperCAmelCase_   ,       """image_data/PSNR-example-comp-10.jpg"""      )   ,       1      )

       # Value expected: 29.73dB
       print("""-- First Test --"""      )
       print(F'''PSNR value is {peak_signal_to_noise_ratio(UpperCAmelCase_   ,       UpperCAmelCase_      )} dB'''      )

       # # Value expected: 31.53dB (Wikipedia Example)
       print("""\n-- Second Test --"""      )
       print(F'''PSNR value is {peak_signal_to_noise_ratio(UpperCAmelCase_   ,       UpperCAmelCase_      )} dB'''      )


if __name__ == "__main__":
    main()
