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(){
  int a, b, k;
  int ski, i, j, l;
  scanf("%d %d %d", &a, &b, &k);
  // printf("%d,%d,%d\n", a,b,k);

  ski = 1+(b-a)/2;

  if(k<ski){
    for(i=0;i<k;i++){
      printf("%d\n",a);
      a++;
    }
    for(j=0;j<k;j++){
      printf("%d\n",b-k+1);
      b++;
    }
  }else{
    for(l=0;l<b-a+1;l++){
      printf("%d\n",a);
      a++;
    }
  }

  return 0;
}