#![allow(dead_code, unused_variables)]
use std::io::{stdin, BufRead};

fn solve(a: String, b: String) -> &'static str {
    let odd_count = [a, b]
        .into_iter()
        .filter(|s| s.chars().last().unwrap() == '1')
        .count();
    match odd_count {
        2 => "Odd",
        _ => "Even",
    }
}

fn main() {
    let a = get_line();
    let b = get_line();
    println!("{}", solve(a, b));
}

fn get_line() -> String {
    let mut buf = String::new();
    stdin().lock().read_line(&mut buf).unwrap();
    buf.trim_end().to_string()
}

fn get_number<T>() -> T
where
    T: std::str::FromStr,
    T::Err: std::fmt::Debug,
{
    get_line().parse().unwrap()
}