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

//int Yuki3029()
int main()
{
int M;

const bool b[] =
{
	false, true, true, true, true, true, false, true, true, true,
	false, true, true, true, true, true, false, true, false, true,
	false, true, false, true, false, true, true, true, true, true,
	false, true, false, true, true, true, false, true, true, true
};

	cin >> M;
	if( b[ M - 1 ] )
		cout << "odd" << endl;
	else
		cout << "even" << endl;

	return 0;
}