# If we list all the natural numbers below 10 that are multiples of 3 and 5,
# we get 3, 5, 6 and 9.
# The sum of these multiples is 23

# Find the sum of all the multiples of 3 or 5 below 1000.

# Add up the filtered numbers
counter = 0
for i in range(1000):
    if i%3 == 0 or i%5 == 0:
        counter +=i

print(counter)


# If we list all the natural numbers below 10 that are multiples of 3 and 5,
# we get 3, 5, 6 and 9.
# The sum of these multiples is 23

# Find the sum of all the multiples of 3 or 5 below 1000.

# Add up the filtered numbers
counter = 0
for i in range(1000):
    if i%3 == 0 or i%5 == 0:
        counter +=i

print(counter)


# If we list all the natural numbers below 10 that are multiples of 3 and 5, # we get 3, 5, 6 and 9. # The sum of these multiples is 23 # Find the sum of all the multiples of 3 or 5 below 1000. # Add up the filtered numbers