{-# LANGUAGE BangPatterns #-} {-# LANGUAGE BinaryLiterals #-} {-# LANGUAGE MultiWayIf #-} {-# LANGUAGE NumDecimals #-} {-# LANGUAGE ScopedTypeVariables #-} {-# LANGUAGE TupleSections #-} import Control.Applicative import Control.Arrow import Control.Monad import Control.Monad.ST import Data.Char import Data.List import Data.Maybe import qualified Data.ByteString.Char8 as B import Data.Array.ST.Safe import Data.STRef import Debug.Trace import Text.Printf import GHC.Exts readInt = readLn :: IO Int readInts = map ( fst . fromJust . B.readInt ) . B.words <$> B.getLine readNInts = readInt >>= flip replicateM readInt which a b f = if f then a else b mp [ a, b ] = ( a, b ) main = do getLine ls <- reverse . sort <$> readInts let histogram = group ls maxLength = maximum $ map length histogram print $ head $ head $ filter ( ( == maxLength ) . length ) histogram