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

int main(){
    char A[100], B[100];
    scanf("%s %s", A, B);
    
    int len_a = strlen(A), len_b = strlen(B);
    int a = A[len_a - 1] - '0', b = B[len_b - 1] - '0';

    printf("%s\n", (a & b & 1) ? "Odd" : "Even");
    return 0;
}