There are 5 employees. Among them, you are going to select two people and give one a special prize and the other a second prize. How many cases are there?
5 2 [OP_PERM]
var_a = 5
var_b = 2
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)
print(int(var_c))