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: Runtime Error)

#include <stdio.h>

int main(void){
    int a,b,k;
    scanf("%d %d %d",&a,&b,&k);
    int c = b-a,num[c];
    for(int i=0; a<=b; a++,i++) num[i] = a;
    if(c > 2*k){
        for(int i=0; i<k;i++) printf("%d\n",num[i]);
        for(int i=c-k+1; i<c+1; i++) printf("%d\n",num[i]);
}else{
    for(int i=1; i<=c+1; i++){
        if(num[i-1] != num[i]) printf("%d\n",num[i-1]);
    }
}
    return 0;
}