from itertools import*
def f(s):
for p in permutations(range(len(s)+1)):
n=list(s);p=list(p);t=[p.pop()]+list(chain(*zip(n,p)));r="".join(map(str,t))
if eval(r):return r
print f("><>")
ZnJvbSBpdGVydG9vbHMgaW1wb3J0KgpkZWYgZihzKToKIGZvciBwIGluIHBlcm11dGF0aW9ucyhyYW5nZShsZW4ocykrMSkpOgoJbj1saXN0KHMpO3A9bGlzdChwKTt0PVtwLnBvcCgpXStsaXN0KGNoYWluKCp6aXAobixwKSkpO3I9IiIuam9pbihtYXAoc3RyLHQpKQoJaWYgZXZhbChyKTpyZXR1cm4gcgoKcHJpbnQgZigiPjw+Iik=