#include <bits/stdc++.h>
#include <atcoder/all>	
using namespace std;
using namespace atcoder;

int main(){
	
	string  a, b;
	cin >> a >> b;
	
	if(a[a.size()-1] - '0' && b[b.size()-1] - '0') cout<< "Odd"  << endl;
	else cout << "Even" << endl;

}