# Write a Python program to List product excluding duplicates 
 # Python 3 code to demonstrate
# Duplication Removal List Product
# using naive methods


# getting Product
def prod(val) :
    res = 1
    for ele in val:
        res *= ele
    return res 


# initializing list
test_list = [1, 3, 5, 6, 3, 5, 6, 1]
print ("The original list is : " + str(test_list))


# using naive method
# Duplication Removal List Product
res = []
for i in test_list:
    if i not in res:
        res.append(i)
res = prod(res)


# printing list after removal
print ("Duplication removal list product : " + str(res))