#include <stdio.h>
#include <unistd.h>

int main() {
    int m;
    scanf("%d", &m);
    if (m == 155 / 5 || m == 165 / 5 || m == 55 / 5 || m == 185 / 5 || m == 85 / 5 || m == 35 / 5 || m == 105 / 5 || m == 115 / 5 || m == 125 / 5 || m == 5 / 5 || m == 95 / 5) puts("even");
    else puts("odd");
    return 0;
}