Dumb Sum of Multiples of 3 or 5 under N

something.rs

fn solution(num: i32) -> i32 {
  let mut acc = 0;
  for x in 0..num {
    match (x % 3, x % 5) {
      (0, 0) => acc += x,
      (0, _) => acc += x,
      (_, 0) => acc += x,
      _ => {}
    }
  }
  return acc;
}