comefrom: <doocs>0537.Complex Number Multiplication_1.py
code: def complexNumberMultiply( num1: str, num2: str) -> str:
      a, b = map(int, num1[:-1].split('+'))
      c, d = map(int, num2[:-1].split('+'))
      return f'{a * c - b * d}+{a * d + c * b}i'
masked: def sample_funcname ( var_0 : str , var_2 : str ) -> str :
      var_4 , var_9 = map ( int , var_0 [ : - 1 ].split ( '+' ) )
      var_10 , var_11 = map ( int , var_2 [ : - 1 ].split ( '+' ) )
      return f'{var_4 * var_10 - var_9 * var_11}+{var_4 * var_11 + var_10 * var_9}i'
  