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: Wrong Answer)

import java.util.*;

public class Main {

    public static void main(String[] args) {
        Scanner s = new Scanner(System.in);
        int a = s.nextInt();
        int b = s.nextInt();

        if (a == b) {
            System.out.println(a);
            System.exit(0);
        }

        int k = s.nextInt();
        boolean f = true;
        Set<Integer> set = new TreeSet<>();

        for (int i = 0; i < k; i++) {
            if (i >= b) {
                f = false;
                break;
            }
            set.add(a + i);

        }
        if (f) {
            for (int i = k - 1; i >= 0; i--) {
                if (b - i < 0) {
                    break;
                }
                set.add(b - i);
            }

        }
        for (Integer integer : set) {
            System.out.println(integer);
        }
    }
}