use std::io::{Read, Write};

fn main() {
    let mut input = String::new();
    let mut stdin = std::io::stdin();
    let mut stdout = std::io::stdout();

    stdin.read_to_string(&mut input).unwrap();

    stdout
        .write_all(match input.as_bytes() {
            b"true" => b"false",
            b"True" => b"False",
            b"TRUE" => b"FALSE",
            b"false" => b"true",
            b"False" => b"True",
            b"FALSE" => b"TRUE",
            b"1" => b"0",
            b"yes" => b"no",
            b"0" => b"1",
            b"no" => b"yes",
            other => other,
        })
        .unwrap();
}