x,y=map(int, input().split())
a=x+y
b=x-y
c=y-x
d=x*y
e=x/y
f=y/x
g=x**y
h=y**x
if(a>(b and c and d and e and f and g and h)):
print("%.6f" % a)
elif(b>(a and c and d and e and f and g and h)):
print("%.6f" % b)
elif(c>(a and b and d and e and f and g and h)):
print("%.6f" % c)
elif(d>(a and b and c and e and f and g and h)):
print("%.6f" % d)
elif(e>(a and b and c and d and f and g and h)):
print("%.6f" % e)
elif(f>(a and b and c and d and e and g and h)):
print("%.6f" % f)
elif(g>(a and b and c and d and e and f and h)):
print("%.6f" % g)
elif(h>(a and b and c and d and e and f and g)):
print("%.6f" % h)