use std::io::*;

fn main() {
    let mut s: String = String::new();
    std::io::stdin().read_to_string(&mut s).ok();
    let mut itr = s.trim().split_whitespace();
    let p: usize = itr.next().unwrap().parse().unwrap();
    let c: usize = itr.next().unwrap().parse().unwrap();

    let mut ans = 1.0;
    for _ in 0..p {
        ans *= 41.0 / 6.0;
    }
    for _ in 0..c {
        ans *= 49.0 / 6.0;
    }
    println!("{:.10}", ans)
}