Submission #643118


Source Code Expand

import Control.Applicative ((<$>))
import Data.List (sortBy)
import Text.Printf (printf)

solve :: Int -> [Double] -> Double
solve k = foldr (\c r -> (c + r) / 2.0) 0.0 . take k . sortBy (flip compare)

main :: IO ()
main = do
    [_, k] <- map read . words <$> getLine
    rs <- map read . words <$> getLine
    printf "%.10f\n" $ solve k rs

Submission Info

Submission Time
Task C - AtCoderプログラミング講座
User hamukichi
Language Haskell (GHC 7.4.1)
Score 100
Code Size 355 Byte
Status AC
Exec Time 34 ms
Memory 1948 KB

Judge Result

Set Name All
Score / Max Score 100 / 100
Status
AC × 34
Set Name Test Cases
All 00_sample_01.txt, 00_sample_02.txt, 00_sample_03.txt, 00_sample_04.txt, test_01.txt, test_02.txt, test_03.txt, test_04.txt, test_05.txt, test_06.txt, test_07.txt, test_08.txt, test_09.txt, test_10.txt, test_11.txt, test_12.txt, test_13.txt, test_14.txt, test_15.txt, test_16.txt, test_17.txt, test_18.txt, test_19.txt, test_20.txt, test_21.txt, test_22.txt, test_23.txt, test_24.txt, test_25.txt, test_26.txt, test_27.txt, test_28.txt, test_29.txt, test_30.txt
Case Name Status Exec Time Memory
00_sample_01.txt AC 34 ms 1420 KB
00_sample_02.txt AC 31 ms 1420 KB
00_sample_03.txt AC 29 ms 1540 KB
00_sample_04.txt AC 29 ms 1572 KB
test_01.txt AC 29 ms 1420 KB
test_02.txt AC 33 ms 1932 KB
test_03.txt AC 31 ms 1932 KB
test_04.txt AC 33 ms 1932 KB
test_05.txt AC 31 ms 1932 KB
test_06.txt AC 31 ms 1936 KB
test_07.txt AC 33 ms 1928 KB
test_08.txt AC 33 ms 1932 KB
test_09.txt AC 31 ms 1932 KB
test_10.txt AC 31 ms 1932 KB
test_11.txt AC 32 ms 1896 KB
test_12.txt AC 32 ms 1900 KB
test_13.txt AC 32 ms 1948 KB
test_14.txt AC 34 ms 1936 KB
test_15.txt AC 32 ms 1936 KB
test_16.txt AC 33 ms 1772 KB
test_17.txt AC 34 ms 1932 KB
test_18.txt AC 32 ms 1932 KB
test_19.txt AC 32 ms 1932 KB
test_20.txt AC 31 ms 1804 KB
test_21.txt AC 32 ms 1932 KB
test_22.txt AC 32 ms 1932 KB
test_23.txt AC 29 ms 1640 KB
test_24.txt AC 29 ms 1676 KB
test_25.txt AC 30 ms 1940 KB
test_26.txt AC 33 ms 1944 KB
test_27.txt AC 31 ms 1824 KB
test_28.txt AC 30 ms 1560 KB
test_29.txt AC 32 ms 1928 KB
test_30.txt AC 31 ms 1928 KB