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 Ruby (2.3.3) (judge verdict: Accepted)

#!/usr/bin/ruby
#encoding: utf-8

a,b,k = gets.split.map(&:to_i)

# a,a+1,a+2,...,a+k-1
c = []
(0..k-1).each do |i|
  if a+i <= b
    c.push(a+i)
  end
end

# b,b-1,b-2,....,b-k+1
d = []
(0..k-1).each do |i|
  if b-i >= a
    d.push(b-i)
  end
end

#p c
#p d
ansAry = (c+d).uniq.sort!
#p ansAry

(0..ansAry.size-1).each do |i|
  puts ansAry[i]
end