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NumberLettersCounts.hs
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NumberLettersCounts.hs
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import Control.Monad
import Data.Vector (Vector, (!), fromList)
numLetters::Vector String
numLetters = fromList [[], "One", "Two", "Three", "Four", "Five", "Six", "Seven","Eight","Nine","Ten","Eleven","Twelve","Thirteen","Fourteen","Fifteen","Sixteen","Seventeen","Eighteen","Nineteen","Twenty","Thirty","Forty","Fifty","Sixty","Seventy","Eighty","Ninety"] --,"Hundred","Thousand","Million","Billon"]
hund :: Int
hund = 100
thou :: Int
thou = 10^3
mill :: Int
mill = 10^6
bill :: Int
bill = 10^9
trill :: Int
trill = 10^12
ntl :: Int -> String
ntl 0 = "Zero"
ntl n
| n <= 20 = numLetters ! n
| n < hund = let p = (n-20) `div` 10 in
if n `mod` 10 == 0
then numLetters ! (20+p)
else numLetters ! (20+p) ++ " " ++ numLetters ! (n`mod`10)
| n < thou = let h = n `div` 100 in
if n `mod` hund == 0
then ntl h ++ " Hundred"
else ntl h ++ " Hundred " ++ ntl (n`mod`hund)
| n < mill = let h = n `div` thou in
if n `mod` thou == 0
then ntl h ++ " Thousand"
else ntl h ++ " Thousand " ++ ntl (n `mod` thou)
| n < bill = let h = n `div` mill in
if n `mod` mill == 0
then ntl h ++ " Million"
else ntl h ++ " Million " ++ ntl (n `mod` mill)
| n < trill = let h = n `div` bill in
if n `mod` bill == 0
then ntl h ++ " Billion"
else ntl h ++ " Billion " ++ ntl (n `mod` bill)
| otherwise = let h = n `div` trill in
if n `mod` trill == 0
then ntl h ++ " Trillion"
else ntl h ++ " Trillion " ++ ntl (n `mod` trill)
lengthNTL :: Int -> Int
lengthNTL = length . ntl
main :: IO ()
main = do
n <- fmap (read :: String -> Int) getLine
replicateM_ n (do
m <- fmap (read :: String -> Int) getLine
putStrLn $ ntl m)