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: Wrong Answer)

#include<stdio.h>

int main(){
	long a,b,k,i;
	scanf("%ld%ld%ld",&a,&b,&k);
	for(i=0;i<k;i++)printf("%ld\n",a+i);
	//for(i=k-1;i>=0;i--)printf("%ld\n",b-i);
	if(b-a+1>=k*2){
		for(i=k-1;i>=0;i--)printf("%ld\n",b-i);
	}
	else {
		for(i=k-1-(k*2-b+a-1);i>=0;i--)printf("%ld\n",b-i);
	}
	return 0;
}