#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <stdint.h>
#include <inttypes.h>

#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>

char *input_buffer;
int input_buffer_size;
struct stat st;

__attribute__((constructor))
void read_to_buffer(void) {
    fstat(0, &st);
    input_buffer_size = st.st_size + 64;
    input_buffer = mmap(0, input_buffer_size, PROT_READ, MAP_PRIVATE, 0, 0);
}


int main(void) {
    char a, b, c = *input_buffer++;
    while (1) {
        a = c;
        c = *input_buffer++;
        if (c == '\n') {
            break;
        }
    }
    while (1) {
        b = c;
        c = *input_buffer++;
        if (c < '!') {
            break;
        }
    }
    printf("%s\n", a == b ? "Even" : "Odd");
    
    munmap(input_buffer, input_buffer_size);
    input_buffer_size = 0;
    return 0;
}