#include<stdio.h>
#include<string.h>
int main(void){
	char a[10000],b[65];
	scanf("%s%s",a,b);
	int alen=strlen(a),blen=strlen(b);
	if(a[alen-1]=='0'||b[blen-1]==0){
		printf("Even");
	}
	else{
		printf("Odd");
	}
}