func main()
	var t: int :: cui@inputInt()
	var a: int :: cui@inputInt()
	var b: int :: cui@inputInt()
	var ans: bool :: true
	if(a.abs() > t | b.abs() > t)
		do ans :: false
	end if
	if(t = 1 & a = 0 & b = 0)
		do ans :: false
	end if
	if(!ans)
		do cui@print("NO\n")
	else
		do cui@print("YES\n")
		var x: int :: 0
		var y: int :: 0
		for tt(1, t)
			if(tt = 1 & (t - b) % 2 <> 0)
				do y :+ moveY(a - y > 0 ?(1, -1))
				do cui@print("\n")
				skip tt
			end if
			if(tt = t & (t - a) % 2 <> 0)
				do x :+ moveX(b - x > 0 ?(1, -1))
				do cui@print("\n")
				skip tt
			end if
			do x :+ moveX(b - x > 0 ?(1, -1))
			do y :+ moveY(a - y > 0 ?(1, -1))
			do cui@print("\n")
		end for
		func moveY(dy: int): int
			do cui@print(dy = 1 ?("^", "v"))
			ret dy
		end func
		func moveX(dx: int): int
			do cui@print(dx = 1 ?(">", "<"))
			ret dx
		end func
	end if
end func