name=input()
names=[]
if name=="oda":
    names.append(name)
    names.append("yukiko")
else:
    names.append(name)
    names.append("oda")
data=[list(input()) for i in range(8)]
x=0
for i in range(8):
    x+=data[i].count(".")
if x%2==0:
    print(names[0])
else:
    print(names[1])