import Control.Applicative

main :: IO()
main = do
	[t,a,b] <- map (read::String->Int) . words <$> getLine
	if check t a b
		then do
			putStrLn "YES"
			mapM_ putStrLn $ route t a b
		else putStrLn "NO"

check t a b
	| a > t || b > t = False
	| otherwise = True
sign x
	| x > 0 = 1
	| x < 0 = -1
	| otherwise = 0

route t a b
	| a == b = if t''-t' == 0 then replicate min' (diag a b) else ([dir a 0, dir 0 b] ++ replicate (min'-1) (diag a b)) ++ (take t'' (cycle [diag a b, diag (-a) (-b)]))
	| a /= b = replicate min' (diag a b) ++ route' (t-min') (a-min'*(sign a)) (b-min'*(sign b))
	where
		min' = minimum [abs a,abs b]
		diag x y
			| x > 0 && y > 0 = ">^"
			| x > 0 && y < 0 = ">v"
			| x < 0 && y > 0 = "<^"
			| x < 0 && y < 0 = "<v"
			| otherwise = ""
		dir x y
			| x > 0 = ">"
			| x < 0 = "<"
			| y > 0 = "^"
			| y < 0 = "v"
		t' = t - min'
		t'' = if t' `mod` 2 == 0 then t' else t' - 1
		

route' t a b = if t'-t'' == 0 then replicate cnt (dir a b) else ((cor a b) ++ replicate (cnt-1) (dir a b)) ++ (take t'' (cycle ["<",">"]))
	where
		dir x y
			| x > 0 = ">"
			| x < 0 = "<"
			| y > 0 = "^"
			| y < 0 = "v"
			| otherwise = ""
		cor x y
			| x > 0 = [">^","v"]
			| x < 0 = ["<v","^"]
			| y > 0 = [">^","<"]
			| y < 0 = ["<v",">"]
			| otherwise = []
		cnt = a + b
		t' = t - cnt
		t'' = if t' `mod` 2 == 0 then t' else t' - 1