from itertools import*
def f(s):
	n=list(s);R=range(len(s)+1)
	for p in permutations(R):
		p=list(p)
		r=[p.pop()]
		t=n+p
		t[::2]=n
		t[1::2]=p
		r="".join(map(str,r+t))
		if eval(r):return r

print f("><>")