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 Python (3.4.3) (judge verdict: Wrong Answer)

import sys

sys.setrecursionlimit(10 ** 6)
input = sys.stdin.readline

def main():
    ans=set()
    a,b,k=map(int, input().split())
    for i in range(a,min(b,a+k)):
        ans.add(i)
    for i in range(b,max(a,b-k),-1):
        ans.add(i)
    for i in sorted(ans):
        print(i)

main()