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 C# (Mono 4.6.2.0) (judge verdict: Accepted)

using System;
using System.Collections.Generic;
using System.Linq;

public class Test
{
	public static void Main()
	{
		var s = Console.ReadLine().Split(' ');
		var a = int.Parse(s[0]);
		var b = int.Parse(s[1]);
		var k = int.Parse(s[2]);
		var e = null as IEnumerable<int>;
		if(b - a < k)
			e = Enumerable.Range(a, b - a + 1);
		else
			e = Enumerable.Range(a, k)
				.Union(Enumerable.Range(b - k + 1, k));
		foreach(var i in e)
		{
			Console.WriteLine(i);
		}
	}
}