// yukicoder: No.3029 素因数
// 2019.6.18 bal4u
/*
 Prime Factors Decomposition
 https://www.dcode.fr/prime-factors-decomposition 

 26180411287263107299803976957264203054160842086839438580
 = 2^2 × 5 × 7369130657357778596659 × 177635683940025046467781066894531
*/

#include <stdio.h>

char t[] = {1, 7, 11, 17, 19, 21, 23, 25, 31, 33, 37, 0};
int main()
{
	int i, M;
	scanf("%d", &M);
	for (i = 0; ; i++) {
		if (t[i] == 0) { puts("odd"); break; }
		if (t[i] == M) { puts("even"); break; }
	}
	return 0;
}