#include<stdio.h>
#include<iostream>
#include<vector>
#include<math.h>
#include<queue>
#include<map>
#include<algorithm>
#include<string.h>
#include<functional>
#include<limits.h>
#include<stdlib.h>
#include<string>
#include<unordered_map>
#include <iomanip>
#include <cmath>
using namespace std;
/*最大公約数*/long long gcd(long long x,long long y){return y?gcd(y,x%y):x;}
int main(){
  long long A,B,C;
  string S="Even";
  cin>>A>>B;
  C=gcd(A,B);
  if(sqrt(C)*sqrt(C)==C) S="Odd";
  cout<<S;
return 0;}