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.Linq;

public class Program
{
    static void Main()
    {
        int[] input = Array.ConvertAll(Console.ReadLine().Split(' '), int.Parse);
        int a = input[0];
        int b = input[1];
        int k = input[2];
        if (b - a + 1 <= k * 2)
        {
            for (int i = a; i <= b; i++)
            {
                Console.WriteLine(i);
            }
        }
        else
        {
            for (int i = a; i < a + k; i++)
            {
                Console.WriteLine(i);
            }
            int start;
            if (a + k - 1 >= b - k + 1)
                start = a + k;
            else
                start = b - k + 1;
            for (int i = start; i <= b; i++)
            {
                Console.WriteLine(i);
            }
        }
    }
}