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 Java (OpenJDK 11.0.6) (judge verdict: Wrong Answer)

import java.util.*;
public class Main {
	public static void main(String[] args){
		Scanner sc = new Scanner(System.in);
		// 整数の入力
		int a = sc.nextInt();
		int b = sc.nextInt();
        int k = sc.nextInt();
        List<Integer> list = new ArrayList<>();
        int i;
        for(i = 0; i < k;i++){
          if(a + i < b){
          list.add(a + i);
          }
        }
      	for(i = 0; i < k;i++){
          if(b - i > 0 && b - i > a){          
          list.add(b - i);
          }
        }
		List listB = new ArrayList(new HashSet<>(list));
        Collections.sort(list);
        for(i = 0;i < listB.size(); i++){
          System.out.println(listB.get(i));
        }
    }
}