package main

import (
	"fmt"
	"math"
)
func main(){
	var A, B int
	fmt.Scan(&A, &B)
	var ans float64 
	for i := 1; i < A; i++ {
		if A >= B {
			A = A % B
			if A == 0 {
				ans = float64(B)
				break
			}
		}else {
			B = B % A
			if B == 0 {
				ans = float64(A)
				break 
			}
		}
	} 
	if ans == 0 || math.Sqrt(ans) == math.Floor(math.Sqrt(ans)) { 
		fmt.Println("Odd")
	}else{
		fmt.Println("Even")
	} 
}