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>
#include <stdlib.h>
#include <string.h>
#include <math.h>

#define LINE_BUF_SIZE 1024

int main(){

    long long int A,B,K;
    long long int i,j;
    char line[LINE_BUF_SIZE];

    fgets(line,sizeof(line),stdin);
    sscanf(line,"%lld %lld %lld", &A,&B,&K);

    for(i=A;i<A+K;i++){
        printf("%lld\n",i);
        j = i;
        if(i == B) return 0;
    }

    if(((B-A) / 2) > K){  /*Kの範囲が重ならない*/
    for(i=B-K+1;i<=B;i++){
        printf("%lld\n",i);
    }
    }

    else{
    for(i=j+1;i<=B;i++){
        printf("%lld\n",i);
        if(i == B) return 0;
    }
    }

    return 0;

}