#include<iostream>
using namespace std;
int main(){
	int n;
	cin >> n;
	if (n%2){
        cout << "odd";
    }else{
        cout << "even";
    }
	return 0;
}

#include <bits/stdc++.h>
using namespace std;
int main()
{
    int n;
    cin>>n;
    if(n%2==0) cout<<"even"; else cout<<"odd";
    return 0;
}

#include<iostream>
using namespace std;
int q;
int main(){
    cin>>q;
    if(q%2==0) cout<<"even";
    else cout<<"odd";
}

https://www.luogu.com.cn/record/65325420