#define  _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <algorithm>
#include <utility>
#include <functional>
#include <cstring>
#include <queue>
#include <stack>
#include <math.h>
#include <iterator>
#include <vector>
#include <string>
#include <set>
#include <math.h>
#include <iostream> 
#include<map>
#include <iomanip>
#include <time.h>
#include <random>
#include <stdlib.h>
#include <list>
#include <typeinfo>
#include <list>
#include <set>
using namespace std;
#define LONG_INF 10000000000000000
#define MAX_MOD 1000000007
#define REP(i,n) for(long long i = 0;i < n;++i)
int hoge[50] = {};
int main() {
	int n;
	cin >> n;
	hoge[13] = true;
	hoge[14] = true;
	hoge[21] = true;
	hoge[23] = true;
	hoge[27] = true;
	hoge[30] = true;
	hoge[31] = true;
	hoge[33] = true;
	hoge[39] = true;
	if (hoge[n] == true) n++;
	if (n % 2 == 0) {
		cout << "odd" << endl;
	}
	else cout << "even" << endl;
	return 0;
}