#!/usr/bin/env /friends/bin/rustscript

fn fizzbuzz(n:i32) -> String {
  let fz = [
    if n % 3 == 0 { "Fizz" } else { "" },
    if n % 5 == 0 { "Buzz" } else { "" },
  ].concat();
  return if fz.len() == 0 { n.to_string() } else { fz };
}

fn main() {
  for i in 1..31 {
    println!("{}", fizzbuzz(i));
  }
}