#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<iostream>
#include<cstdio>
#include<cctype>
#include<string.h>
#include<math.h>
#include<cmath>
#include<algorithm>
#include<iomanip>
using namespace std;
int main()
{
	long long a;
	cin>>a;
	if(a%2!=0)
	{
		cout<<"odd"; 
	}
	else
	{
		cout<<"even";	
	} 
	return 0;
}

n = int(input())#输入时直接将n转为int类型
if n % 2:#非零即为真，故该语句等价于n % 2 == 1，当n % 2 ！= 0时即执行语句
    print('odd')
    exit(0)#直接结束程序，使程序无需再做偶数判断，更省时
print('even')#若仍未退出程序，即未被判断为奇数则n一定为偶数，则直接输出即可，无需再做判断

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

#include

using namespace std;

int main()

{

int n;

cin>>n;

if(n%2==1)

{

	cout<<"odd";
}
else
{
	cout<<"even";
}
return 0;

}

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