dl = int(input("\n"))
sh = int(input("\n"))
vy = int(input("\n"))
if(sh > dl):
    ogal = sh/dl <= 2
else:
    ogal = dl/sh <= 2
if(sh < dl):
    tgal = sh/vy >= 2
else:
    tgal = dl/vy >= 2

if(ogal and tgal):
    print("good")
else:
    print("bad")