Pencils and ballpoint pens were arranged in 10 rows both horizontally and vertically. If you place a ballpoint pen around the perimeter and a pencil inside, how many pencils are there in all?
10 2 [OP_SUB] 2 [OP_POW]
var_a = 10
var_b = 2
var_c = var_a - var_b
var_d = 2
var_e = var_c ** var_d
print(int(var_e))