#include <stdio.h>

int odd(unsigned int n);
int even(unsigned int n);

int odd(unsigned int n)
{
    return n != 0 ? even(n - 1) : n;
}

int even(unsigned int n)
{
    return n != 0 ? odd(n - 1) : !n;
}

int main(void)
{
    unsigned int n;
    scanf("%u", &n);
    odd(n) ? puts("odd") : puts("not odd");
    even(n) ? puts("even") : puts("not even");
    return 0;
}