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)

#pragma target("avx2")
#pragma optimize("O3")
#include<stdio.h>

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