n = list(raw_input())
a,b = (0,0),(9,0)
for i in range(len(n)):
	c = int(n[i])
	if c >= a[0]:
		a = (c,i)
	if c < b[0]:
		b = (c,i)
print n
n[a[1]], n[b[1]] = n[b[1]], n[a[1]]
print "".join(n)