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)

// use std::cmp;
use std::io::Read;

fn main() {
    let mut buff = String::new();
    std::io::stdin().read_to_string(&mut buff).unwrap();
    let mut iter = buff.split_whitespace();

    let a: i32 = iter.next().unwrap().parse().unwrap();
    let b: i32 = iter.next().unwrap().parse().unwrap();
    let k: i32 = iter.next().unwrap().parse().unwrap();

    let mut v: Vec<i32> = Vec::new();

    for i in a..(a + k) {
        if i <= b - k || i <= b {
            v.push(i)
        }
    }
    for i in (b - k + 1)..(b + 1) {
        if v.last().unwrap() < &i {
            v.push(i)
        }
    }

    for i in v {
        println!("{}", i)
    }
}