

"""simple docstring"""



def 			_snake_case  (     UpperCAmelCase_	:       float       , UpperCAmelCase_	:       float      ):
     A__				      =	float()
     try:
          A__				      =	mass * acceleration
     except Exception:
          return -0.0
     return force


if __name__ == "__main__":
 import doctest

 # run doctest
 doctest.testmod()

 # demo
 SCREAMING_SNAKE_CASE_       :						Tuple					=    12.5
 SCREAMING_SNAKE_CASE_       :						int					=    1_0
 SCREAMING_SNAKE_CASE_       :						Optional[Any]					=    newtons_second_law_of_motion(mass, acceleration)
 print('The force is ', force, 'N')









"""simple docstring"""



from __future__ import annotations





def 			_snake_case  (     UpperCAmelCase_	:       list[list[int]]       , UpperCAmelCase_	:       list[list[int]]      ):
     assert len(UpperCAmelCase_      ) == len(UpperCAmelCase_      )

     A__				      =	len(UpperCAmelCase_      )
     A__				      =	list(range(UpperCAmelCase_      )      )
     A__				      =	[-1] * n  # who the donor has donated to
     A__				      =	[-1] * n  # who the recipient has received from
     A__				      =	[0] * n

     while unmatched_donors:
          A__				      =	unmatched_donors[0]
          A__				      =	donor_pref[donor]
          A__				      =	donor_preference[num_donations[donor]]
          num_donations[donor] += 1
          A__				      =	recipient_pref[recipient]
          A__				      =	rec_record[recipient]

          if prev_donor != -1:
               if rec_preference.index(UpperCAmelCase_      ) > rec_preference.index(UpperCAmelCase_      ):
                    A__				      =	donor
                    A__				      =	recipient
                    unmatched_donors.append(UpperCAmelCase_      )
                    unmatched_donors.remove(UpperCAmelCase_      )
          else:
               A__				      =	donor
               A__				      =	recipient
               unmatched_donors.remove(UpperCAmelCase_      )
     return donor_record






