fn main() {
    let mut n = String::new();
    std::io::stdin().read_line(&mut n).ok();
    let n: usize = n.trim().parse().unwrap();
    let mut p = String::new();
    std::io::stdin().read_line(&mut p).ok();
    let p: f64 = p.trim().parse().unwrap();

    if n >= 200 {
        println!("1");
        return;
    }
    println!("{}", 1. - (1. - p).powf(n as f64));
}