If there are 5 members A, B, C, D, and E, find the number of cases in which one representative and two deputies are selected.
5 1 [OP_PERM] 5 1 [OP_SUB] 2 [OP_COMB] [OP_ADD]
var_a = 5
var_b = 1
var_c = 1
var_a = int(var_a)
var_b = int(var_b)
for i, elem in enumerate(range(var_b)):
    var_c = var_c * (var_a-i)
var_d = 5
var_e = 1
var_f = var_d - var_e
var_g = 2
var_h = 1
var_f = int(var_f)
var_g = int(var_g)
for i, elem in enumerate(range(var_g)):
    var_h = var_h * (var_f-i)
for i, elem in enumerate(range(var_g)):
    var_h = var_h / (i+1)
var_i = var_c + var_h
print(int(var_i))