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

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