numlist = [1, 2, 3, 4, 4, 5, 6, 6, 7, 7, 7, 8, 9, 10]

# *** MY CODE ***
count = 0
for num in set(numlist):
    count += 1

print count

# *** HIS CODE ***

#numbers = [1, 2, 3, 1, 2, 3, 4, 1]
#unique_numbers = set(numbers)
#print(len(unique_numbers))