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 Java8 (OpenJDK 1.8.0) (judge verdict: Accepted)

import java.util.*;
public class Main{
  public static void main(String[] args){
    Scanner sc = new Scanner(System.in);
    ArrayList<Integer> ar = new ArrayList<Integer>();
    int A = sc.nextInt();
    int B = sc.nextInt();
    int K = sc.nextInt();
    int diff = B - A;
    if(diff + 1 > K){
      for(int i=0;i<K;i++){
        ar.add(A + i);
        ar.add(B - i);
      }
      Collections.sort(ar);
      ArrayList<Integer> li = new ArrayList<Integer>(new LinkedHashSet<>(ar));
      for(int i=0;i<li.size();i++){
        System.out.println(li.get(i));
      }
    }else{
      for(int i=A;i<=B;i++){
        System.out.println(i);
      }
    }
  }
}