fn main() {
    println!("{}", going(10));
}

fn going(n: i32) -> f64 {
    let part_f = |x: i32, y: i32| -> i32 {
        (x..=y).fold(1, |acc, c| acc * c)
    };
    (1..=n).fold(1f64, |acc, c| {
        println!("{}", acc);
        acc * (1 / part_f(c, n)) as f64
    })
}