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;
class Program
{
  static void Main(string[] args)
  {
    // スペース区切りの整数の入力
    int a,b,k;
    string[] input = Console.ReadLine().Split(' ');
    a  = int.Parse(input[0]);
    b  = int.Parse(input[1]);
    k  = int.Parse(input[2]);



    for (int i=0;i<k;i++){
      Console.WriteLine(a+i);
      if (a+i >=b)break;
    }

    for (int i=k-1;i>=0;i--){
      if (a+k > b-i)continue;
      Console.WriteLine(b-i);
    }


  }


}