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++14 (GCC 5.4.1) (judge verdict: Accepted)

#include<iostream>

int main()
{
    int a, b, k;
    std::cin >> a >> b >> k;
    if (k > b - a + 1){
        k = b - a + 1;
    }
    for(int i = 0;i < k; i++){
        std::cout << a + i << std::endl;
    }
    if(b - a + 1 < 2 * k){
        k = b - a - k + 1;
    }
    for(int i = 0;i < k; i++){
        std::cout << b - k + i + 1 << std::endl;
    }
}