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

    for i in 1..=1000000 {
        if i * i * i == n {
            println!("Yes");
            return;
        }
    }
    println!("No");
}