There are 10-won, 100-won, and 500-won coins each. If you pick and flip two of these three coins, what are the total number of possible outcomes?
3 2 [OP_PERM]
var_a = 3
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))