fn main() {
    let t = {
        let mut line = String::new();
        std::io::stdin().read_line(&mut line).unwrap();
        line.trim().parse::<usize>().unwrap()
    };
    let nn: Vec<_> = (0..t)
        .map(|_| {
            let mut line = String::new();
            std::io::stdin().read_line(&mut line).unwrap();
            line.trim().parse::<usize>().unwrap()
        })
        .collect();

    for &n in &nn {
        let ans = if n == 0 {
            2
        } else {
            let mut ans = 1;
            for i in (n.max(4) - 4)..n {
                let prod = ((i + 1)..=n).fold(1, |acc, j| (acc * j) % 10);
                ans = (ans + prod) % 10;
            }

            ans
        };

        println!("{}", ans);
    }
}