If the lengths of the two sides of a parallelogram are 10 centimeters (cm) and 7 centimeters (cm), how many centimeters (cm) is the sum of the lengths of the four sides?
10 7 [OP_ADD] 2 [OP_MUL]
var_a = 10
var_b = 7
var_c = var_a + var_b
var_d = 2
var_e = var_c * var_d
print(int(var_e))