import sys
input = sys.stdin.readline

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

def main():
    input = inp()
    
    sum1 = 0
    sum2 = 0
    
    for i in range(1, input + 1):
        sum1 += i
        
    for i in range(2, input + 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()