use proconio::input;
fn main() {
    input!{
        a: usize,
        b: usize,
    }
    let mut ans: usize = 1;
    for i in 0..10{
        if a >> i & 1 == 1{
            if b >> i & 1 == 1{
                ans *= 2
            }
            else{
                ans *= 0
            }
        }
    }
    println!("{}", ans)
}