def f(a):
S=0
if a.count(-1) == len(a):
print("YODA")
else:
for i in range(len(a)):
if a[i] != -1:
S*=10
S+=a[i]
print(S)
a=list(map(int,list(input())))
b=list(map(int,list(input())))
a.reverse()
b.reverse()
if len(a) < len(b):
a.extend([-1]*(len(b)-len(a)))
if len(b) < len(a):
b.extend([-1]*(len(a)-len(b)))
for i in range(len(a)):
if a[i] < b[i]:
a[i] = -1
elif b[i] <a[i]:
b[i] =-1
a.reverse()
b.reverse()
f(a)
f(b)