comefrom: <doocs>2023.Number of Pairs of Strings With Concatenation Equal to Target_1.py
code: def numOfPairs( nums: List[str], target: str) -> int:
      n = len(nums)
      return sum(
          i != j and nums[i] + nums[j] == target for i in range(n) for j in range(n)
      )
masked: def sample_funcname ( var_0 : List [ str ] , var_3 : str ) -> int :
      var_6 = len ( var_0 )
      return sum ( var_8 != var_9 and var_0 [ var_8 ] + var_0 [ var_9 ] == var_3 for var_8 in range ( var_6 ) for var_9 in range ( var_6 ) )
  