use std::str::FromStr;
use std::io::{BufRead, stdin, Stdin};
use std::collections::{VecDeque};
use std::cmp::Ordering;
use std::iter::FromIterator;

struct Scanner {
    sep: char,
    inputs: VecDeque<String>,
    cin: Stdin,
}

#[allow(unused)]
impl Scanner {
    pub fn new(ch: char) -> Scanner {
        Scanner {
            sep: ch,
            inputs: VecDeque::new(),
            cin: stdin(),
        }
    }
    pub fn read<T: FromStr>(&mut self) -> T {
        let mut tries = 0;

        while bool::from(self.inputs.is_empty()) {
            if tries == 3 {
                panic!("3 Blank lines found.");
            }

            let cin_base = &mut self.cin;
            let cin = &mut cin_base.lock();
            let mut str: String = String::new();
            cin.read_line(&mut str).unwrap();
            for s in str.trim_end().split(self.sep) {
                &self.inputs.push_back(String::from(s));
            }
            tries += 1;
        }
        let s: String = String::from(&self.inputs.pop_front().unwrap());
        s.parse::<T>().ok()
            .expect("Failed to parse token.")
    }
    pub fn read_i32(&mut self) -> i32 { self.read() }
    pub fn read_i64(&mut self) -> i32 { self.read() }
    pub fn read_usize(&mut self) -> usize { self.read() }
    pub fn read_vec<T: FromStr>(&mut self, n: usize) -> Vec<T> {
        (0..n).map(|_| self.read()).collect::<Vec<_>>()
    }
}


fn main() {
    let mut sc = Scanner::new(' ');

    let a = sc.read_i32();
    let b = sc.read_i32();

    println!("{}", (a | b) + (a & b));
}