comefrom: <doocs>1612.Check If Two Expression Trees are Equivalent_1.py
code: def calc(ans, left, right, op):
      for i in range(26):
          if op == '+':
              ans[i] = left[i] + right[i]
          else:
              ans[i] = left[i] - right[i]
masked: def sample_funcname ( var_0 , var_1 , var_2 , var_3 ) :
      for var_6 in range ( 26 ) :
          if var_3 == '+' :
              var_0 [ var_6 ] = var_1 [ var_6 ] + var_2 [ var_6 ]
          else :
              var_0 [ var_6 ] = var_1 [ var_6 ] - var_2 [ var_6 ]
  