a,b,c = input().split()
if c == "<":
	if int(a) < int(b):
		print("YES")
	else:
		print("NO")
elif c == ">":
	if int(a) > int(b):
		print("YES")
	else:
		print("NO")
else:
	if int(a) == int(b):
		print("YES")
	else:
		print("NO")