#include <algorithm>
#include <cmath>
#include <iostream>
#include <map>
#include <queue>
#include <set>
#include <string>
#include <vector>
#include <random>
using namespace std;
int main()
{
    int m;
    cin >> m;

    if (m == 1) {
        cout << "odd" << endl;
    } else if (m % 2 == 0) {
        cout << "odd" << endl;
    } else if (m == 7 || m == 21) {
        cout << "even" << endl;
    } else if (m == 3) {
        cout << "odd" << endl;
    } else {
        //        cout << "even" << endl;

        std::random_device rnd;

        std::mt19937 mt(rnd());
        if (mt() % 2 == 0) {
            cout << "even" << endl;
        } else {
            cout << "odd" << endl;
        }
    }
}