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 OCaml (4.02.3) (judge verdict: Accepted)

let a, b, k = Scanf.scanf " %d %d %d" @@ fun a b c -> a, b, c
let l, r = max a @@ b - k + 1, min b @@ a + k - 1
let _ =
  if l <= r then for i = a to b do Printf.printf "%d\n" i done
  else
    (for i = a to r do Printf.printf "%d\n" i done;
    for i = l to b do Printf.printf "%d\n" i done)