#include <stdio.h>
#include <string.h>
int main(int argc, char **argv)
{
char *str = malloc(strlen(argv[1]);
strcpy(argv[1], str);
char last = str[strlen(str) - 1];
switch (last){
case '0':
case '2':
case '4':
case '6':
case '8':
case 'A':
case 'a':
case 'C':
case 'c':
case 'E':
case 'e': printf("even\n"); break;
default: printf("odd\n"); break;
}