fn main() {
    use std::env;

    let nums: Vec<i32> = env::args().into_iter().skip(1).map(|s| s.parse::<i32>().unwrap()).collect();
    let nums = (nums[0], nums[1]);
    match nums.0 % 2 == 0 {
        true | false if nums.1 % 2 == 0 => print!("Even"),
        _ => print!("Odd")
    }
}