/*
* Multiples of 3 and 5
* Problem 1
*
* If we list all the natural numbers below 10 that are multiples of 3 or 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.
*/

fn main() {
    let mut sum = 0;

    for x in 1..999 {
        if x % 3 == 0 || x % 5 == 0 {
            sum += x;
        }
    }
    println!("{}", sum);
}