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 PHP (5.6.30) (judge verdict: Wrong Answer)

<?php /*atcoder.php*/

$at = new Atcoder();
$at->main();
unset($at);

class Atcoder{
	private function arrayIn(){
		$buf = explode(" ", fgets(STDIN));
		return $this->killNewLine($buf);
	}
	private function killNewLine($buf = null){
		$buf = str_replace("\r\n", "", $buf);
		$buf = str_replace("\n", "", $buf);
		$buf = str_replace("\r", "", $buf);
		return $buf;
	}

	public function main(){
		$s = $this->arrayIn();
		
		$st = $s[0];
		$en = $s[1];

		$kf = $s[2];

		$ans = array();

		for($i = $st; $i < ($st + $kf); $i++){
			if($i >= $en)break;
			$ans[] = $i;
		}
		for($i = ($en - $kf + 1); $i <= $en; $i++){
			if($i <= $st)continue;
            $ans[] = $i;
            if($i >= $en)break;
		}
		$ans = array_unique($ans);
		foreach($ans as $e){
			echo $e . "\n";
		}
		unset($e);
	}
}
?>