fn main() {
    let mut pc = String::new();
    std::io::stdin().read_line(&mut pc).ok();
    let pc: Vec<u32> = pc.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let p = pc[0];
    let c = pc[1];
    let primes: u128 = 41;
    let comps: u128 = 49;

    let mut result: Vec<u128> = vec![0;2];
    let mut num: u128 = primes.pow(p) * comps.pow(c);
    let divisor: u128 = 6u128.pow(p+c);
    result[0] = num / divisor;
    num %= divisor;
    num *= 10_000_000_000;
    result[1] = num/divisor;
    println!("{}.{:010}", result[0], result[1]);
}