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 Rust (1.15.1) (judge verdict: Accepted)

fn get_input() -> String {
    let mut word = String::new();
    std::io::stdin().read_line(&mut word).unwrap();
    word.trim().to_owned()
}

fn main() {
    let (a, b, k) = {
        let line = get_input();
        let mut split = line.split_whitespace();
        let a: usize = split.next().unwrap().parse().unwrap();
        let b: usize = split.next().unwrap().parse().unwrap();
        let k: usize = split.next().unwrap().parse().unwrap();
        (a, b, if k > b - a + 1 { b - a + 1 } else { k })
    };

    let mut n:Vec<usize> = (a..a+k).collect();
    let mut n2:Vec<usize> = (b-k+1..b+1).collect();
    n.append(&mut n2);

    n.sort();
    n.dedup();

    for i in n {
        println!("{}", i);
    }
}