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);
    int a = sc.nextInt();
    int b = sc.nextInt();
    int k = sc.nextInt();
    HashSet<Integer> set = new HashSet<Integer>();
    for(int i = a; i < Math.min(b + 1, (a + k)); i++) {
      set.add(i);
    }
    for(int i = b; i > Math.max(a - 1, (b - k)); i--) {
      set.add(i);
    }
    ArrayList<Integer> list = new ArrayList<Integer>();
    for(Iterator<Integer> itr = set.iterator(); itr.hasNext();) {
      list.add(itr.next());
    }
    Collections.sort(list);
    for(int i = 0; i < list.size(); i++) {
      System.out.println(list.get(i));
    }
  }
}