====== LU99.L03: Vielfache von 3 und 5 ======
<code python>
def main():
    limit = int(input(''))
    total = 0
    number = 1

    while number < limit:
        if number % 3 == 0 or number % 5 == 0:
            total += number
        number += 1

    print(total)
</code>