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(void){
    unsigned long int A, B;
	int K;
	unsigned long int a[100]={0};
	unsigned long int b[100]={0};
	scanf("%d %d %d", &A, &B, &K);
	if (K > ((B-A+1)/2 + (B-A+1)%2)) K=(B-A+1)/2 + (B-A+1)%2;
	for (int i=0; i<K ; i++) {
		a[i]= A+i;
		b[i]= B-i;
		
	}
	for (int j= 0; j<K; j++) {
		if (a[j] != b[j]) printf("%d\n", a[j]);
	}
	for (int l= 0; l<K; l++) {
		printf("%d\n", b[K-1-l]);
	}
    return(0);
}