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# (.NET Core 3.1.201) (judge verdict: Wrong Answer)

using System;
using static System.Console;
using System.Linq;
using System.Collections.Generic;
class Program
{
    static void Main(string[] args)
    {
      string[] input = ReadLine().Split();
      long a = long.Parse(input[0]);
      long b = long.Parse(input[1]);
      int k = int.Parse(input[2]);
      List<long> ans = new List<long>();
      
      for (long i=a;i<a+Math.Min(2*k,b-a);i++)
      {
        if (!ans.Contains(i)){
          ans.Add(i);
        }
      }
      for (long i=b-Math.Min(2*k,b-a)+1;i<=b;i++)
      {
        if (!ans.Contains(i)){
          ans.Add(i);
        }
      }
      ans.Sort();
      for(int i=0;i<ans.Count;i++)
      {
        WriteLine(ans[i]);
      }
    }
}