T, A, B = map(int,raw_input().split(" "))
if min(A,B) + abs(A-B) > T:
	print "NO"
else:
	T -= 1
	if A + B <= 1:
		if T == 0:
			if A == B:
				print "NO"
			else:
				print "YES"
				print "^" if A > B else ">"
			quit()
		else:
			print "YES"
			if A == B:
				print "<v"
				A += 1; B += 1
			elif A > B:
				print "<"
				B += 1
			else:
				print "v"
				A += 1 
	else:
		print "YES"
		if not A:
		 	A += 1; B -= 1
			print ">v"
		elif not B:
			A -= 1; B += 1
			print "<^"
		else:
			T += 1	
	slant = min(A,B)
	short = slant +abs(A-B)
	for i in range(slant-1):
		print ">^"
	if short != slant:
		d = "^" if A > B else ">"
		for i in range(short-slant):
			print d
	exc = T - short
	for i in range(exc/2):
		print "^"
		print "v"
	if exc % 2 == 0:
		print ">^" 
	else:
		print ">"
		print "^"