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 Perl (v5.18.2) (judge verdict: Accepted)

#! /usr/bin/perl

use strict;
use warnings;

chomp(my $s = <>);
my($a, $b, $k) = split(/\s+/, $s);

my $s1 = $a;
my $e1 = $a + ($k - 1);
my $s2 = $b - ($k - 1);
my $e2 = $b;

if($b < $e1) {
    $e1 = $b;
}
if($s2 <= $e1) {
    $s2 = $e1 + 1;
}
foreach my $i ($s1 .. $e1) {
    print $i, "\n";
}
foreach my $i ($s2 .. $e2) {
    print $i, "\n";
}