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;
using System.Text;

namespace atcoder_BegginerContest93_Question2
{
    class Program
    {
        static void Main(string[] args)
        {
            var input = Console.ReadLine().Split().Select(int.Parse).ToArray();
            StringBuilder s = new StringBuilder();

            for (int i = input[0]; i < input[0] + input[2]; i++)
            {
                if (i <= input[1])
                {
                    s.AppendLine(i.ToString());
                }
            }

            for (int i = input[1] - input[2] + 1; i <= input[1]; i++)
            {
                if (input[0] + input[2] <= i)
                {
                    s.AppendLine(i.ToString());
                }
            }

            Console.WriteLine(s);
        }
    }
}