Problem:
Score : 200 points

Problem Statement

Print all the integers that satisfies the following in ascending order:

Among the integers between A and B (inclusive), it is either within the K smallest integers or within the K largest integers.

Constraints

1 \leq A \leq B \leq 10^9

1 \leq K \leq 100

All values in input are integers.

Input

Input is given from Standard Input in the following format:

A B K

Output

Print all the integers that satisfies the condition above in ascending order.

Sample Input 1

3 8 2

Sample Output 1

3
4
7
8

3 is the first smallest integer among the integers between 3 and 8.

4 is the second smallest integer among the integers between 3 and 8.

7 is the second largest integer among the integers between 3 and 8.

8 is the first largest integer among the integers between 3 and 8.

Sample Input 2

4 8 3

Sample Output 2

4
5
6
7
8

Sample Input 3

2 9 100

Sample Output 3

2
3
4
5
6
7
8
9

Solution in Haskell (GHC 7.10.3) (judge verdict: Wrong Answer)

import Control.Applicative
import Data.List

check :: [Integer] -> [Integer]
check [a, b, k] 
    | b - a <= 2 * k = [a..b]
    | otherwise = [a..(a + k - 1)] ++ [(b - k + 1)..(b)]

print_all :: [Integer] -> IO ()
print_all [] = return () :: IO ()
print_all (f:rest) = do
    print f
    print_all rest

main = do
    a <- check <$> map (\a -> read a :: Integer) <$> words <$> getLine
    print_all a