use proconio::{fastout, input};

#[fastout]
fn main() {
    input! {
        b: char,
        c: char,
    }

    println!("{}", output(solve(b, c)));
}

fn solve(b: char, c: char) -> bool {
    b == c
}

fn output(ans: bool) -> &'static str {
    match ans {
        true => "Yes",
        false => "No",
    }
}