A large square was created by placing 10 square-shaped tiles, both horizontally and vertically, without gaps. If the tiles on the perimeter are blue and the tiles on the inside are yellow, how many yellow tiles are there?
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))