KoDSpeed, blackyukiSpeed = map(int, input().split())

KoDSpeed_m = KoDSpeed * 1000 / 60

blackyukiSpeed_m = blackyukiSpeed * 60

if KoDSpeed_m > blackyukiSpeed_m:
    print("KoD")
if KoDSpeed_m == blackyukiSpeed_m:
    print("same")
if blackyukiSpeed_m > KoDSpeed_m:
    print("blackyuki")