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 (GCC 5.4.1) (judge verdict: Accepted)

// ConsoleApplication21.cpp: 定义控制台应用程序的入口点。
//

#include<stdio.h>
int main()
{
	int a, b;
	int k;
	int x[100];
	int y[100];
	int i;
	int j;

	scanf("%d%d%d",&a,&b,&k);
	if (k >= b - a)
	{
		for (i = a; i <= b; i++)
			printf("%d\n",i);
		return 0;
	}
		
	for (i = 0; i < k; i++)
	{
		x[i] = a + i;
	}
	for (j = 0; j < k; j++)
	{
		y[j] = b-j;
	}
	j--;
	for (i = 0; i < k; i++)
	{
		printf("%d\n",x[i]);
	}
	while (j >= 0)
	{
		if (y[j] > x[i - 1])
			printf("%d\n", y[j]);
		    j--;
	}
   
    return 0;
}