import Control.Monad
import Data.List
import Data.Function
import Data.Maybe

main = do
  [t, a, b] <- liftM (map read . words) getLine
  let f p = let xs = mapMaybe (g p) [0..t]
            in guard (not (null xs)) >> return (maximumBy (compare `on` uncurry (+)) xs)
      g p x = let y = x - p
              in if x < p || x + y > t
                 then Nothing
                 else Just (x, y)
      i = f a
      j = f b
  case liftM2 ((+) `on` (uncurry (+))) i j of
    Nothing -> putStrLn "NO"
    Just k
      | k < t -> putStrLn "NO"
      | otherwise -> do
          putStrLn "YES"
          let Just (u, d) = i
              Just (r, l) = j
              xs = replicate u "^" ++ replicate d "v" ++ replicate (t-u-d) ""
              ys = replicate (t-l-r) "" ++ replicate l "<" ++ replicate r ">"
          mapM_ putStrLn $ zipWith (++) xs ys