func main()
	var s: int :: cui@inputInt()
	var t: int :: cui@inputInt()
	var c: char :: cui@inputChar()
	
	var ans: bool :: false
	switch(c)
	case '<'
		do ans :: s < t
	case '>'
		do ans :: s > t
	case '='
		do ans :: s = t
	end switch
	
	do cui@print((ans ?("YES", "NO")) ~ "\n")
end func