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)

#include<stdio.h>
 
int main(void)
{
int a, b, c;
int i;
scanf("%d %d %d", &a, &b, &c);
if(b-a+1 <= c || b-a+1 <= 2*c){
for(i=a; i<=b; i++){
printf("%d\n", i);
}
}else{
for(i=0;i<c;i++){
printf("%d\n", a+i);
}for(i=c-1;i>=0;i--){
printf("%d\n", b-i);
}
}
return 0;
}