use std::cmp::{max, min};

fn gcd(x: usize, y: usize) -> usize {
    if x % y == 0 { return y; }
    gcd(y, x % y)
}

fn main() {
    let mut ab = String::new();
    std::io::stdin().read_line(&mut ab).ok();
    let ab: Vec<usize> = ab.trim().split_whitespace().map(|s| s.parse().unwrap()).collect();
    let a = ab[0];
    let b = ab[1];

    let gcd_val = gcd(max(a, b), min(a, b));
    let mut result = 1usize + if gcd_val == 1 { 0 } else { 1 };
    let limit: usize = (gcd_val as f64).sqrt().ceil() as usize;
    for i in 2..=limit {
        if gcd_val % i == 0 {
            result += 1;
        }
    }
    println!("{}", if result % 2 == 0 { "Even" } else { "Odd" });
}