use proconio::{fastout, input};

#[fastout]
fn main() {
    input! {
        a: u8,
        b: u8,
    }

    println!("{}", output(solve(a, b)))
}

fn solve(a: u8, b: u8) -> u8 {
    match a != b {
        true => a.min(b) * 2,
        false => a * 2 - 1,
    }
}

fn output(ans: u8) -> u8 {
    ans
}