bilet

a= int (input ())
print (a)
b=int(a/100000)
c=int(a/10000)%10
d=int(a/1000)%10
e=int(a%10)
f=int((a%100)/10)
g=int((a%1000)/100)
h= b+c+d
i= e+f+g
if h==i:
    print ("fortonulo")
else:
    print ("oblom")