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 Go (1.6) (judge verdict: Accepted)

package main

import (
        "fmt"
)

func solution(a, b, k int) []int {

        out := make([]int, 0, 2*k)
        for i := a; i <= b; i++ {
                if i < a+k || b-k < i {
                        out = append(out, i)
                }
        }
        return out
}

func main() {
        var a, b, k int
        fmt.Scan(&a, &b, &k)
        for _, n := range solution(a, b, k) {
                fmt.Println(n)
        }
}