#include <stdio.h>
#include <string.h>

void main(void) {
	char binaryNumberA[100] = "a"; 
	scanf("%s",binaryNumberA);
	char binaryNumberB[100] = "B"; 
	scanf("%s",binaryNumberB);
	if(binaryNumberA[(int)strlen(binaryNumberA)-1] != '1' 
	|| binaryNumberB[(int)strlen(binaryNumberB)-1] != '1'){
		printf("Even");
	}else{
		printf("Odd");
	}
}