import sys
input = sys.stdin.readline

def inp(): # For taking integer inputs.
    return(int(input()))

def main():
    n = inp()

    sum1 = 0
    sum2 = 0

    for i in range(1, n + 1):
        sum1 += i

    for i in range(2, n + 2):
        sum2 += i

    if sum1 % 2 == 0 and sum2 % 2 == 0:
        even_or_odd = "even"
    if sum1 % 2 != 0 and sum2 % 2 != 0:
        even_or_odd = "odd"
    else:
        even_or_odd = "either"

    print(even_or_odd)

main()